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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 PG |
33 | |
34 | #include "bgpd/bgp_attr_evpn.h" | |
35 | #include "bgpd/bgpd.h" | |
36 | #include "bgpd/bgp_table.h" | |
37 | #include "bgpd/bgp_route.h" | |
38 | #include "bgpd/bgp_attr.h" | |
39 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 40 | #include "bgpd/bgp_label.h" |
7ef5a232 | 41 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 42 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 43 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 44 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 45 | #include "bgpd/bgp_encap_types.h" |
46 | #include "bgpd/bgp_debug.h" | |
14454c9f | 47 | #include "bgpd/bgp_errors.h" |
128ea8ab | 48 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 49 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 50 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 51 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 52 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 53 | #include "bgpd/bgp_vty.h" |
128ea8ab | 54 | |
55 | /* | |
56 | * Definitions and external declarations. | |
57 | */ | |
128ea8ab | 58 | DEFINE_QOBJ_TYPE(bgpevpn) |
c44ab6f1 | 59 | DEFINE_QOBJ_TYPE(bgp_evpn_es) |
128ea8ab | 60 | |
61 | ||
62 | /* | |
63 | * Static function declarations | |
64 | */ | |
d62a17ae | 65 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn); |
9c7edc03 | 66 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
09319b4e DS |
67 | struct bgpevpn *vpn, |
68 | struct bgp_dest *dest, | |
69 | struct bgp_path_info *local_pi, | |
70 | const char *caller); | |
9c7edc03 | 71 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 72 | |
73 | /* | |
74 | * Private functions. | |
75 | */ | |
76 | ||
77 | /* | |
78 | * Make vni hash key. | |
79 | */ | |
d8b87afe | 80 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 81 | { |
d8b87afe | 82 | const struct bgpevpn *vpn = p; |
d62a17ae | 83 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 84 | } |
85 | ||
86 | /* | |
87 | * Comparison function for vni hash | |
88 | */ | |
74df8d6d | 89 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 90 | { |
d62a17ae | 91 | const struct bgpevpn *vpn1 = p1; |
92 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 93 | |
d62a17ae | 94 | if (!vpn1 && !vpn2) |
74df8d6d | 95 | return true; |
d62a17ae | 96 | if (!vpn1 || !vpn2) |
74df8d6d | 97 | return false; |
d62a17ae | 98 | return (vpn1->vni == vpn2->vni); |
14c1a7bf | 99 | } |
100 | ||
c44ab6f1 | 101 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
102 | { |
103 | const struct bgpevpn *vpn1 = p1; | |
104 | const struct bgpevpn *vpn2 = p2; | |
105 | ||
106 | return vpn1->vni - vpn2->vni; | |
107 | } | |
108 | ||
10ebe1ab MK |
109 | /* |
110 | * Make vrf import route target hash key. | |
111 | */ | |
d8b87afe | 112 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 113 | { |
d8b87afe QY |
114 | const struct vrf_irt_node *irt = p; |
115 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
116 | |
117 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
118 | } |
119 | ||
120 | /* | |
121 | * Comparison function for vrf import rt hash | |
122 | */ | |
74df8d6d | 123 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
124 | { |
125 | const struct vrf_irt_node *irt1 = p1; | |
126 | const struct vrf_irt_node *irt2 = p2; | |
127 | ||
128 | if (irt1 == NULL && irt2 == NULL) | |
74df8d6d | 129 | return true; |
10ebe1ab MK |
130 | |
131 | if (irt1 == NULL || irt2 == NULL) | |
74df8d6d | 132 | return false; |
10ebe1ab MK |
133 | |
134 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); | |
135 | } | |
136 | ||
137 | /* | |
f9b8094e | 138 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
139 | */ |
140 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
141 | { | |
5e53dce3 | 142 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
143 | struct vrf_irt_node *irt; |
144 | ||
5e53dce3 T |
145 | bgp_evpn = bgp_get_evpn(); |
146 | if (!bgp_evpn) { | |
e50f7cfd | 147 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 148 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
149 | return NULL; |
150 | } | |
151 | ||
152 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
153 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
154 | |
155 | irt->rt = *rt; | |
156 | irt->vrfs = list_new(); | |
157 | ||
158 | /* Add to hash */ | |
5e53dce3 | 159 | if (!hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern)) { |
10ebe1ab MK |
160 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
161 | return NULL; | |
162 | } | |
163 | ||
164 | return irt; | |
165 | } | |
166 | ||
167 | /* | |
168 | * Free the vrf import rt node | |
169 | */ | |
170 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
171 | { | |
5e53dce3 | 172 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 173 | |
5e53dce3 T |
174 | bgp_evpn = bgp_get_evpn(); |
175 | if (!bgp_evpn) { | |
e50f7cfd | 176 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 177 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
178 | return; |
179 | } | |
180 | ||
5e53dce3 | 181 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 182 | list_delete(&irt->vrfs); |
10ebe1ab MK |
183 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
184 | } | |
185 | ||
186 | /* | |
187 | * Function to lookup Import RT node - used to map a RT to set of | |
188 | * VNIs importing routes with that RT. | |
189 | */ | |
190 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
191 | { | |
5e53dce3 | 192 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
193 | struct vrf_irt_node *irt; |
194 | struct vrf_irt_node tmp; | |
195 | ||
5e53dce3 T |
196 | bgp_evpn = bgp_get_evpn(); |
197 | if (!bgp_evpn) { | |
f9b8094e T |
198 | flog_err( |
199 | EC_BGP_NO_DFLT, | |
200 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
201 | return NULL; |
202 | } | |
203 | ||
204 | memset(&tmp, 0, sizeof(struct vrf_irt_node)); | |
205 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
5e53dce3 | 206 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
207 | return irt; |
208 | } | |
209 | ||
210 | /* | |
211 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
212 | */ | |
996c9314 | 213 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
214 | { |
215 | struct listnode *node = NULL, *nnode = NULL; | |
216 | struct bgp *tmp_bgp_vrf = NULL; | |
217 | ||
218 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
219 | if (tmp_bgp_vrf == bgp_vrf) | |
220 | return 1; | |
221 | } | |
222 | return 0; | |
223 | } | |
224 | ||
14c1a7bf | 225 | /* |
226 | * Make import route target hash key. | |
227 | */ | |
d8b87afe | 228 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 229 | { |
d8b87afe QY |
230 | const struct irt_node *irt = p; |
231 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
232 | |
233 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 234 | } |
235 | ||
236 | /* | |
237 | * Comparison function for import rt hash | |
238 | */ | |
74df8d6d | 239 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 240 | { |
d62a17ae | 241 | const struct irt_node *irt1 = p1; |
242 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 243 | |
d62a17ae | 244 | if (irt1 == NULL && irt2 == NULL) |
74df8d6d | 245 | return true; |
14c1a7bf | 246 | |
d62a17ae | 247 | if (irt1 == NULL || irt2 == NULL) |
74df8d6d | 248 | return false; |
14c1a7bf | 249 | |
d62a17ae | 250 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 251 | } |
252 | ||
7724c0a1 | 253 | /* |
128ea8ab | 254 | * Create a new import_rt |
255 | */ | |
d62a17ae | 256 | static struct irt_node *import_rt_new(struct bgp *bgp, |
257 | struct ecommunity_val *rt) | |
128ea8ab | 258 | { |
d62a17ae | 259 | struct irt_node *irt; |
128ea8ab | 260 | |
d62a17ae | 261 | if (!bgp) |
262 | return NULL; | |
128ea8ab | 263 | |
d62a17ae | 264 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 265 | |
d62a17ae | 266 | irt->rt = *rt; |
267 | irt->vnis = list_new(); | |
128ea8ab | 268 | |
d62a17ae | 269 | /* Add to hash */ |
270 | if (!hash_get(bgp->import_rt_hash, irt, hash_alloc_intern)) { | |
271 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
272 | return NULL; | |
273 | } | |
128ea8ab | 274 | |
d62a17ae | 275 | return irt; |
128ea8ab | 276 | } |
277 | ||
278 | /* | |
279 | * Free the import rt node | |
7724c0a1 | 280 | */ |
d62a17ae | 281 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 282 | { |
d62a17ae | 283 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 284 | list_delete(&irt->vnis); |
d62a17ae | 285 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 286 | } |
287 | ||
14c1a7bf | 288 | /* |
128ea8ab | 289 | * Function to lookup Import RT node - used to map a RT to set of |
290 | * VNIs importing routes with that RT. | |
291 | */ | |
d62a17ae | 292 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
293 | struct ecommunity_val *rt) | |
128ea8ab | 294 | { |
d62a17ae | 295 | struct irt_node *irt; |
296 | struct irt_node tmp; | |
128ea8ab | 297 | |
d62a17ae | 298 | memset(&tmp, 0, sizeof(struct irt_node)); |
299 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); | |
300 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
301 | return irt; | |
128ea8ab | 302 | } |
303 | ||
304 | /* | |
305 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
306 | */ | |
d62a17ae | 307 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 308 | { |
d62a17ae | 309 | struct listnode *node, *nnode; |
310 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 311 | |
d62a17ae | 312 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
313 | if (tmp_vpn == vpn) | |
314 | return 1; | |
315 | } | |
128ea8ab | 316 | |
d62a17ae | 317 | return 0; |
128ea8ab | 318 | } |
319 | ||
320 | /* | |
321 | * Compare Route Targets. | |
322 | */ | |
d62a17ae | 323 | static int evpn_route_target_cmp(struct ecommunity *ecom1, |
324 | struct ecommunity *ecom2) | |
128ea8ab | 325 | { |
d62a17ae | 326 | if (ecom1 && !ecom2) |
327 | return -1; | |
128ea8ab | 328 | |
d62a17ae | 329 | if (!ecom1 && ecom2) |
330 | return 1; | |
128ea8ab | 331 | |
d62a17ae | 332 | if (!ecom1 && !ecom2) |
333 | return 0; | |
128ea8ab | 334 | |
d62a17ae | 335 | if (ecom1->str && !ecom2->str) |
336 | return -1; | |
128ea8ab | 337 | |
d62a17ae | 338 | if (!ecom1->str && ecom2->str) |
339 | return 1; | |
128ea8ab | 340 | |
d62a17ae | 341 | if (!ecom1->str && !ecom2->str) |
342 | return 0; | |
128ea8ab | 343 | |
d62a17ae | 344 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 345 | } |
346 | ||
987d8198 DS |
347 | static void evpn_xxport_delete_ecomm(void *val) |
348 | { | |
349 | struct ecommunity *ecomm = val; | |
350 | ecommunity_free(&ecomm); | |
351 | } | |
352 | ||
128ea8ab | 353 | /* |
354 | * Mask off global-admin field of specified extended community (RT), | |
355 | * just retain the local-admin field. | |
356 | */ | |
d62a17ae | 357 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
358 | struct ecommunity_val *src) | |
128ea8ab | 359 | { |
d7c0a89a | 360 | uint8_t type; |
128ea8ab | 361 | |
d62a17ae | 362 | type = src->val[0]; |
363 | dst->val[0] = 0; | |
364 | if (type == ECOMMUNITY_ENCODE_AS) { | |
365 | dst->val[2] = dst->val[3] = 0; | |
366 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
367 | || type == ECOMMUNITY_ENCODE_IP) { | |
368 | dst->val[2] = dst->val[3] = 0; | |
369 | dst->val[4] = dst->val[5] = 0; | |
370 | } | |
128ea8ab | 371 | } |
372 | ||
10ebe1ab MK |
373 | /* |
374 | * Map one RT to specified VRF. | |
375 | * bgp_vrf = BGP vrf instance | |
376 | */ | |
996c9314 | 377 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct ecommunity_val *eval) |
10ebe1ab MK |
378 | { |
379 | struct vrf_irt_node *irt = NULL; | |
380 | struct ecommunity_val eval_tmp; | |
381 | ||
382 | /* If using "automatic" RT, | |
383 | * we only care about the local-admin sub-field. | |
384 | * This is to facilitate using L3VNI(VRF-VNI) | |
385 | * as the RT for EBGP peering too. | |
386 | */ | |
387 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
996c9314 | 388 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
10ebe1ab MK |
389 | mask_ecom_global_admin(&eval_tmp, eval); |
390 | ||
391 | irt = lookup_vrf_import_rt(&eval_tmp); | |
e066d6d0 DS |
392 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
393 | /* Already mapped. */ | |
394 | return; | |
10ebe1ab | 395 | |
e066d6d0 | 396 | if (!irt) |
10ebe1ab | 397 | irt = vrf_import_rt_new(&eval_tmp); |
10ebe1ab MK |
398 | |
399 | /* Add VRF to the list for this RT. */ | |
400 | listnode_add(irt->vrfs, bgp_vrf); | |
401 | } | |
402 | ||
403 | /* | |
404 | * Unmap specified VRF from specified RT. If there are no other | |
405 | * VRFs for this RT, then the RT hash is deleted. | |
406 | * bgp_vrf: BGP VRF specific instance | |
407 | */ | |
996c9314 | 408 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, struct vrf_irt_node *irt) |
10ebe1ab MK |
409 | { |
410 | /* Delete VRF from list for this RT. */ | |
411 | listnode_delete(irt->vrfs, bgp_vrf); | |
412 | if (!listnode_head(irt->vrfs)) { | |
10ebe1ab MK |
413 | vrf_import_rt_free(irt); |
414 | } | |
415 | } | |
416 | ||
128ea8ab | 417 | /* |
418 | * Map one RT to specified VNI. | |
14c1a7bf | 419 | */ |
d62a17ae | 420 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
421 | struct ecommunity_val *eval) | |
128ea8ab | 422 | { |
d62a17ae | 423 | struct irt_node *irt; |
424 | struct ecommunity_val eval_tmp; | |
128ea8ab | 425 | |
d62a17ae | 426 | /* If using "automatic" RT, we only care about the local-admin |
427 | * sub-field. | |
428 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
429 | */ | |
430 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
431 | if (!is_import_rt_configured(vpn)) | |
432 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 433 | |
d62a17ae | 434 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 435 | if (irt) |
d62a17ae | 436 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
437 | /* Already mapped. */ | |
438 | return; | |
128ea8ab | 439 | |
d62a17ae | 440 | if (!irt) { |
441 | irt = import_rt_new(bgp, &eval_tmp); | |
442 | assert(irt); | |
443 | } | |
128ea8ab | 444 | |
d62a17ae | 445 | /* Add VNI to the hash list for this RT. */ |
446 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 447 | } |
448 | ||
449 | /* | |
450 | * Unmap specified VNI from specified RT. If there are no other | |
451 | * VNIs for this RT, then the RT hash is deleted. | |
452 | */ | |
d62a17ae | 453 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
454 | struct irt_node *irt) | |
14c1a7bf | 455 | { |
d62a17ae | 456 | /* Delete VNI from hash list for this RT. */ |
457 | listnode_delete(irt->vnis, vpn); | |
458 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 459 | import_rt_free(bgp, irt); |
460 | } | |
14c1a7bf | 461 | } |
462 | ||
0ca10580 | 463 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 464 | const struct prefix_evpn *p, |
0ca10580 CS |
465 | struct attr *attr, uint8_t flags) |
466 | { | |
467 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
468 | ||
469 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
470 | if (!bgp_vrf) | |
471 | return; | |
472 | ||
b96cafa3 CS |
473 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
474 | return; | |
475 | ||
476 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
477 | * in case of route is self MAC-IP, | |
478 | * advertise-pip and advertise-svi-ip features | |
479 | * are enabled. | |
480 | * Otherwise, for all host MAC-IP route's | |
27727001 | 481 | * copy anycast RMAC. |
b96cafa3 CS |
482 | */ |
483 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
484 | && bgp_vrf->evpn_info->advertise_pip && | |
485 | bgp_vrf->evpn_info->is_anycast_mac) { | |
486 | /* copy sys rmac */ | |
487 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
488 | ETH_ALEN); | |
489 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
490 | attr->mp_nexthop_global_in = | |
491 | bgp_vrf->evpn_info->pip_ip; | |
492 | } else | |
493 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 494 | } |
b96cafa3 | 495 | |
128ea8ab | 496 | /* |
497 | * Create RT extended community automatically from passed information: | |
498 | * of the form AS:VNI. | |
499 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
500 | * the need is to get a RT value that will be unique across different | |
501 | * VNIs but the same across routers (in the same AS) for a particular | |
502 | * VNI. | |
503 | */ | |
c581d8b0 | 504 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl) |
128ea8ab | 505 | { |
d62a17ae | 506 | struct ecommunity_val eval; |
b90d4580 CS |
507 | struct ecommunity *ecomadd, *ecom; |
508 | bool ecom_found = false; | |
509 | struct listnode *node; | |
128ea8ab | 510 | |
bf1061d8 VB |
511 | if (bgp->advertise_autort_rfc8365) |
512 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 513 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 514 | |
d62a17ae | 515 | ecomadd = ecommunity_new(); |
1207a5bc | 516 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 CS |
517 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) |
518 | if (ecommunity_cmp(ecomadd, ecom)) | |
519 | ecom_found = true; | |
520 | ||
521 | if (!ecom_found) | |
522 | listnode_add_sort(rtl, ecomadd); | |
84f22ecc QY |
523 | else |
524 | ecommunity_free(&ecomadd); | |
128ea8ab | 525 | } |
14c1a7bf | 526 | |
527 | /* | |
128ea8ab | 528 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
529 | * creation of a VNI. | |
530 | */ | |
d62a17ae | 531 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 532 | { |
d62a17ae | 533 | bgp_evpn_derive_auto_rd(bgp, vpn); |
534 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
535 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 536 | } |
537 | ||
1ec31309 | 538 | /* |
539 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
540 | */ | |
541 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
542 | { | |
543 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
544 | return; | |
545 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
546 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
547 | } | |
548 | ||
09319b4e DS |
549 | struct bgp_dest *bgp_global_evpn_node_get(struct bgp_table *table, afi_t afi, |
550 | safi_t safi, | |
551 | const struct prefix_evpn *evp, | |
552 | struct prefix_rd *prd) | |
c44ab6f1 AK |
553 | { |
554 | struct prefix_evpn global_p; | |
555 | ||
556 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
557 | /* prefix in the global table doesn't include the VTEP-IP so | |
558 | * we need to create a different copy of the prefix | |
559 | */ | |
560 | evpn_type1_prefix_global_copy(&global_p, evp); | |
561 | evp = &global_p; | |
562 | } | |
563 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
564 | } | |
565 | ||
09319b4e DS |
566 | struct bgp_dest *bgp_global_evpn_node_lookup(struct bgp_table *table, afi_t afi, |
567 | safi_t safi, | |
568 | const struct prefix_evpn *evp, | |
569 | struct prefix_rd *prd) | |
c44ab6f1 AK |
570 | { |
571 | struct prefix_evpn global_p; | |
572 | ||
573 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
574 | /* prefix in the global table doesn't include the VTEP-IP so | |
575 | * we need to create a different copy of the prefix | |
576 | */ | |
577 | evpn_type1_prefix_global_copy(&global_p, evp); | |
578 | evp = &global_p; | |
579 | } | |
580 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
581 | } | |
582 | ||
128ea8ab | 583 | /* |
584 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 585 | */ |
d62a17ae | 586 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 587 | const struct prefix_evpn *p, |
d62a17ae | 588 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 589 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 590 | { |
591 | struct stream *s; | |
592 | int ipa_len; | |
593 | char buf1[ETHER_ADDR_STRLEN]; | |
594 | char buf2[INET6_ADDRSTRLEN]; | |
595 | char buf3[INET6_ADDRSTRLEN]; | |
c44ab6f1 | 596 | static struct in_addr zero_remote_vtep_ip; |
d62a17ae | 597 | |
598 | /* Check socket. */ | |
599 | if (!zclient || zclient->sock < 0) | |
600 | return 0; | |
601 | ||
602 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
603 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
604 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
605 | zlog_debug( |
606 | "%s: No zebra instance to talk to, not installing remote macip", | |
607 | __func__); | |
d62a17ae | 608 | return 0; |
bb4ef1ae | 609 | } |
c44ab6f1 AK |
610 | |
611 | if (!esi) | |
612 | esi = zero_esi; | |
d62a17ae | 613 | s = zclient->obuf; |
614 | stream_reset(s); | |
615 | ||
996c9314 LB |
616 | zclient_create_header( |
617 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
618 | bgp->vrf_id); | |
d62a17ae | 619 | stream_putl(s, vpn->vni); |
3714a385 | 620 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); /* Mac Addr */ |
d62a17ae | 621 | /* IP address length and IP address, if any. */ |
3714a385 | 622 | if (is_evpn_prefix_ipaddr_none(p)) |
d62a17ae | 623 | stream_putl(s, 0); |
624 | else { | |
3714a385 | 625 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 626 | : IPV6_MAX_BYTELEN; |
627 | stream_putl(s, ipa_len); | |
3714a385 | 628 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 629 | } |
9c7edc03 AK |
630 | /* If the ESI is valid that becomes the nexthop; tape out the |
631 | * VTEP-IP for that case | |
c44ab6f1 | 632 | */ |
9c7edc03 | 633 | if (bgp_evpn_is_esi_valid(esi)) |
c44ab6f1 | 634 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
9c7edc03 AK |
635 | else |
636 | stream_put_in_addr(s, &remote_vtep_ip); | |
d62a17ae | 637 | |
ead40654 | 638 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 639 | /* Also TX the sequence number of the best route. */ |
640 | if (add) { | |
ead40654 | 641 | stream_putc(s, flags); |
f07e1c99 | 642 | stream_putl(s, seq); |
c44ab6f1 | 643 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 644 | } |
d62a17ae | 645 | |
646 | stream_putw_at(s, 0, stream_get_endp(s)); | |
647 | ||
648 | if (bgp_debug_zebra(NULL)) | |
996c9314 | 649 | zlog_debug( |
f07e1c99 | 650 | "Tx %s MACIP, VNI %u MAC %s IP %s flags 0x%x seq %u remote VTEP %s", |
996c9314 | 651 | add ? "ADD" : "DEL", vpn->vni, |
3714a385 | 652 | prefix_mac2str(&p->prefix.macip_addr.mac, |
653 | buf1, sizeof(buf1)), | |
654 | ipaddr2str(&p->prefix.macip_addr.ip, | |
f07e1c99 | 655 | buf3, sizeof(buf3)), flags, seq, |
996c9314 LB |
656 | inet_ntop(AF_INET, &remote_vtep_ip, buf2, |
657 | sizeof(buf2))); | |
d62a17ae | 658 | |
659 | return zclient_send_message(zclient); | |
7ef5a232 | 660 | } |
b18825eb | 661 | |
128ea8ab | 662 | /* |
663 | * Add (update) or delete remote VTEP from zebra. | |
664 | */ | |
d62a17ae | 665 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
666 | const struct prefix_evpn *p, |
667 | int flood_control, int add) | |
128ea8ab | 668 | { |
d62a17ae | 669 | struct stream *s; |
128ea8ab | 670 | |
d62a17ae | 671 | /* Check socket. */ |
672 | if (!zclient || zclient->sock < 0) | |
673 | return 0; | |
128ea8ab | 674 | |
d62a17ae | 675 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
676 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
677 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
678 | zlog_debug( |
679 | "%s: No zebra instance to talk to, not installing remote vtep", | |
680 | __func__); | |
d62a17ae | 681 | return 0; |
bb4ef1ae | 682 | } |
128ea8ab | 683 | |
d62a17ae | 684 | s = zclient->obuf; |
685 | stream_reset(s); | |
128ea8ab | 686 | |
996c9314 LB |
687 | zclient_create_header( |
688 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
689 | bgp->vrf_id); | |
d62a17ae | 690 | stream_putl(s, vpn->vni); |
3714a385 | 691 | if (is_evpn_prefix_ipaddr_v4(p)) |
692 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
693 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 694 | flog_err( |
e50f7cfd | 695 | EC_BGP_VTEP_INVALID, |
d62a17ae | 696 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
697 | add ? "ADD" : "DEL", vpn->vni); | |
698 | return -1; | |
699 | } | |
b16dd019 | 700 | stream_putl(s, flood_control); |
128ea8ab | 701 | |
d62a17ae | 702 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 703 | |
d62a17ae | 704 | if (bgp_debug_zebra(NULL)) |
705 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %s", | |
706 | add ? "ADD" : "DEL", vpn->vni, | |
3714a385 | 707 | inet_ntoa(p->prefix.imet_addr.ip.ipaddr_v4)); |
128ea8ab | 708 | |
d62a17ae | 709 | return zclient_send_message(zclient); |
128ea8ab | 710 | } |
711 | ||
342dd0c6 | 712 | /* |
713 | * Build extended communities for EVPN prefix route. | |
714 | */ | |
715 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
716 | struct attr *attr) | |
717 | { | |
718 | struct ecommunity ecom_encap; | |
342dd0c6 | 719 | struct ecommunity_val eval; |
720 | struct ecommunity_val eval_rmac; | |
721 | bgp_encap_types tnl_type; | |
722 | struct listnode *node, *nnode; | |
723 | struct ecommunity *ecom; | |
fab92da7 | 724 | struct ecommunity *old_ecom; |
342dd0c6 | 725 | struct list *vrf_export_rtl = NULL; |
726 | ||
727 | /* Encap */ | |
728 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
729 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
730 | encode_encap_extcomm(tnl_type, &eval); | |
731 | ecom_encap.size = 1; | |
34540b0d | 732 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 733 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 734 | |
735 | /* Add Encap */ | |
fab92da7 | 736 | if (attr->ecommunity) { |
737 | old_ecom = attr->ecommunity; | |
738 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); | |
739 | if (!old_ecom->refcnt) | |
740 | ecommunity_free(&old_ecom); | |
741 | } else | |
742 | ecom = ecommunity_dup(&ecom_encap); | |
743 | attr->ecommunity = ecom; | |
342dd0c6 | 744 | |
745 | /* Add the export RTs for L3VNI/VRF */ | |
746 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
1525e99f DS |
747 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, ecom)) |
748 | attr->ecommunity = | |
749 | ecommunity_merge(attr->ecommunity, ecom); | |
342dd0c6 | 750 | |
751 | /* add the router mac extended community */ | |
752 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 753 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 754 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
342dd0c6 | 755 | } |
756 | ||
757 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); | |
758 | } | |
759 | ||
128ea8ab | 760 | /* |
1ec31309 | 761 | * Build extended communities for EVPN route. |
762 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
763 | * and ENCAP extended communities are applicable for all routes. | |
764 | * The default gateway extended community and MAC mobility (sticky) extended | |
765 | * community are added as needed based on passed settings - only for type-2 | |
766 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
767 | * added, if present, based on passed settings - only for non-link-local | |
768 | * type-2 routes. | |
128ea8ab | 769 | */ |
7ec156a9 | 770 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 771 | int add_l3_ecomm) |
128ea8ab | 772 | { |
d62a17ae | 773 | struct ecommunity ecom_encap; |
774 | struct ecommunity ecom_sticky; | |
ead40654 | 775 | struct ecommunity ecom_default_gw; |
68e33151 | 776 | struct ecommunity ecom_na; |
d62a17ae | 777 | struct ecommunity_val eval; |
778 | struct ecommunity_val eval_sticky; | |
ead40654 | 779 | struct ecommunity_val eval_default_gw; |
bc59a672 | 780 | struct ecommunity_val eval_rmac; |
68e33151 | 781 | struct ecommunity_val eval_na; |
9c7edc03 | 782 | bool proxy; |
68e33151 | 783 | |
d62a17ae | 784 | bgp_encap_types tnl_type; |
785 | struct listnode *node, *nnode; | |
786 | struct ecommunity *ecom; | |
d7c0a89a | 787 | uint32_t seqnum; |
7a3e76f1 | 788 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 789 | |
d62a17ae | 790 | /* Encap */ |
791 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
792 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
793 | encode_encap_extcomm(tnl_type, &eval); | |
794 | ecom_encap.size = 1; | |
34540b0d | 795 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 796 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 797 | |
d62a17ae | 798 | /* Add Encap */ |
799 | attr->ecommunity = ecommunity_dup(&ecom_encap); | |
128ea8ab | 800 | |
7a3e76f1 | 801 | /* Add the export RTs for L2VNI */ |
d62a17ae | 802 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
803 | attr->ecommunity = ecommunity_merge(attr->ecommunity, ecom); | |
128ea8ab | 804 | |
1ec31309 | 805 | /* Add the export RTs for L3VNI if told to - caller determines |
806 | * when this should be done. | |
523cafc4 | 807 | */ |
1ec31309 | 808 | if (add_l3_ecomm) { |
7ec156a9 MK |
809 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
810 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
811 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
812 | ecom)) | |
996c9314 LB |
813 | attr->ecommunity = ecommunity_merge( |
814 | attr->ecommunity, ecom); | |
7ec156a9 | 815 | } |
f1f8b53c | 816 | } |
7a3e76f1 | 817 | |
1ec31309 | 818 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 819 | if (attr->sticky) { |
820 | seqnum = 0; | |
821 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
822 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
823 | ecom_sticky.size = 1; | |
34540b0d | 824 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 825 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
d62a17ae | 826 | attr->ecommunity = |
827 | ecommunity_merge(attr->ecommunity, &ecom_sticky); | |
828 | } | |
c85c03c7 | 829 | |
1ec31309 | 830 | /* Add RMAC, if told to. */ |
831 | if (add_l3_ecomm) { | |
bc59a672 | 832 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
feca4f1e | 833 | ecommunity_add_val(attr->ecommunity, &eval_rmac, true, true); |
bc59a672 MK |
834 | } |
835 | ||
1ec31309 | 836 | /* Add default gateway, if needed. */ |
ead40654 MK |
837 | if (attr->default_gw) { |
838 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
839 | encode_default_gw_extcomm(&eval_default_gw); | |
840 | ecom_default_gw.size = 1; | |
34540b0d | 841 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 842 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
996c9314 LB |
843 | attr->ecommunity = |
844 | ecommunity_merge(attr->ecommunity, &ecom_default_gw); | |
ead40654 MK |
845 | } |
846 | ||
9c7edc03 AK |
847 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
848 | if (attr->router_flag || proxy) { | |
68e33151 | 849 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 850 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 851 | ecom_na.size = 1; |
34540b0d | 852 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 CS |
853 | ecom_na.val = (uint8_t *)eval_na.val; |
854 | attr->ecommunity = ecommunity_merge(attr->ecommunity, | |
855 | &ecom_na); | |
856 | } | |
857 | ||
d62a17ae | 858 | attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES); |
128ea8ab | 859 | } |
860 | ||
861 | /* | |
862 | * Add MAC mobility extended community to attribute. | |
863 | */ | |
d7c0a89a | 864 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 865 | { |
866 | struct ecommunity ecom_tmp; | |
867 | struct ecommunity_val eval; | |
d7c0a89a | 868 | uint8_t *ecom_val_ptr; |
d62a17ae | 869 | int i; |
d7c0a89a | 870 | uint8_t *pnt; |
d62a17ae | 871 | int type = 0; |
872 | int sub_type = 0; | |
873 | ||
874 | /* Build MM */ | |
875 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
876 | ||
877 | /* Find current MM ecommunity */ | |
421bb26a | 878 | ecom_val_ptr = NULL; |
d62a17ae | 879 | |
880 | if (attr->ecommunity) { | |
881 | for (i = 0; i < attr->ecommunity->size; i++) { | |
4371bf91 PG |
882 | pnt = attr->ecommunity->val + |
883 | (i * attr->ecommunity->unit_size); | |
d62a17ae | 884 | type = *pnt++; |
885 | sub_type = *pnt++; | |
886 | ||
887 | if (type == ECOMMUNITY_ENCODE_EVPN | |
888 | && sub_type | |
889 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 890 | ecom_val_ptr = |
4371bf91 PG |
891 | (attr->ecommunity->val + |
892 | (i * attr->ecommunity->unit_size)); | |
d62a17ae | 893 | break; |
894 | } | |
895 | } | |
896 | } | |
897 | ||
898 | /* Update the existing MM ecommunity */ | |
421bb26a | 899 | if (ecom_val_ptr) { |
4371bf91 PG |
900 | memcpy(ecom_val_ptr, eval.val, sizeof(char) |
901 | * attr->ecommunity->unit_size); | |
d62a17ae | 902 | } |
903 | /* Add MM to existing */ | |
904 | else { | |
905 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
906 | ecom_tmp.size = 1; | |
34540b0d | 907 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 908 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 909 | |
f9a78910 DS |
910 | if (attr->ecommunity) |
911 | attr->ecommunity = | |
912 | ecommunity_merge(attr->ecommunity, &ecom_tmp); | |
913 | else | |
914 | attr->ecommunity = ecommunity_dup(&ecom_tmp); | |
d62a17ae | 915 | } |
128ea8ab | 916 | } |
917 | ||
918 | /* Install EVPN route into zebra. */ | |
d62a17ae | 919 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
920 | const struct prefix_evpn *p, |
921 | struct bgp_path_info *pi) | |
128ea8ab | 922 | { |
d62a17ae | 923 | int ret; |
d594a14c | 924 | uint8_t flags; |
b16dd019 | 925 | int flood_control; |
9c7edc03 | 926 | uint32_t seq; |
128ea8ab | 927 | |
d594a14c AK |
928 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
929 | flags = 0; | |
9c7edc03 AK |
930 | |
931 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
932 | if (pi->attr->sticky) | |
933 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
934 | if (pi->attr->default_gw) | |
935 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
936 | if (is_evpn_prefix_ipaddr_v6(p) && | |
937 | pi->attr->router_flag) | |
938 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
939 | ||
940 | seq = mac_mobility_seqnum(pi->attr); | |
941 | /* if local ES notify zebra that this is a sync path */ | |
942 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
943 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
944 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
945 | SET_FLAG(flags, | |
946 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
947 | } | |
948 | } else { | |
949 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
950 | return 0; | |
951 | ||
952 | /* if a local path is being turned around and sent | |
953 | * to zebra it is because it is a sync path on | |
954 | * a local ES | |
955 | */ | |
956 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
957 | /* supply the highest peer seq number to zebra | |
958 | * for MM seq syncing | |
959 | */ | |
960 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
961 | /* if any of the paths from the peer have the ROUTER | |
962 | * flag set install the local entry as a router entry | |
963 | */ | |
964 | if (is_evpn_prefix_ipaddr_v6(p) && | |
965 | (pi->attr->es_flags & | |
966 | ATTR_ES_PEER_ROUTER)) | |
967 | SET_FLAG(flags, | |
968 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
969 | ||
970 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
971 | SET_FLAG(flags, | |
972 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
973 | } | |
974 | ||
d594a14c | 975 | ret = bgp_zebra_send_remote_macip( |
9c7edc03 AK |
976 | bgp, vpn, p, pi->attr->nexthop, 1, flags, |
977 | seq, bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
978 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
979 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 980 | } else { |
b16dd019 AK |
981 | switch (pi->attr->pmsi_tnl_type) { |
982 | case PMSI_TNLTYPE_INGR_REPL: | |
983 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
984 | break; | |
985 | ||
986 | case PMSI_TNLTYPE_PIM_SM: | |
987 | flood_control = VXLAN_FLOOD_PIM_SM; | |
988 | break; | |
989 | ||
990 | default: | |
991 | flood_control = VXLAN_FLOOD_DISABLED; | |
992 | break; | |
993 | } | |
994 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 995 | } |
128ea8ab | 996 | |
d62a17ae | 997 | return ret; |
128ea8ab | 998 | } |
999 | ||
1000 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1001 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1002 | const struct prefix_evpn *p, |
d62a17ae | 1003 | struct in_addr remote_vtep_ip) |
128ea8ab | 1004 | { |
d62a17ae | 1005 | int ret; |
128ea8ab | 1006 | |
d62a17ae | 1007 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
1008 | ret = bgp_zebra_send_remote_macip(bgp, vpn, p, remote_vtep_ip, | |
c44ab6f1 AK |
1009 | 0, 0, 0, NULL); |
1010 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
1011 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1012 | else |
b16dd019 AK |
1013 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1014 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1015 | |
d62a17ae | 1016 | return ret; |
128ea8ab | 1017 | } |
1018 | ||
1019 | /* | |
1020 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1021 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1022 | * from peers. | |
1023 | */ | |
d62a17ae | 1024 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1025 | struct bgp_dest *dest, |
9c7edc03 AK |
1026 | struct bgp_path_info *old_local, |
1027 | struct bgp_path_info *new_select) | |
128ea8ab | 1028 | { |
9bcb3eef | 1029 | struct bgp_dest *global_dest; |
40381db7 | 1030 | struct bgp_path_info *pi; |
d62a17ae | 1031 | afi_t afi = AFI_L2VPN; |
1032 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1033 | |
9c7edc03 AK |
1034 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
1035 | char prefix_buf[PREFIX_STRLEN]; | |
1036 | char esi_buf[ESI_STR_LEN]; | |
1037 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1038 | struct prefix_evpn *evp = |
1039 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1040 | |
1041 | zlog_debug("local path deleted %s es %s; new-path-es %s", | |
1042 | prefix2str(evp, | |
1043 | prefix_buf, sizeof(prefix_buf)), | |
1044 | esi_to_str(&old_local->attr->esi, | |
1045 | esi_buf, sizeof(esi_buf)), | |
1046 | new_select ? esi_to_str(&new_select->attr->esi, | |
1047 | esi_buf2, sizeof(esi_buf2)) : ""); | |
1048 | } | |
1049 | ||
d62a17ae | 1050 | /* Locate route node in the global EVPN routing table. Note that |
1051 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1052 | * L3VPN routes. | |
1053 | */ | |
c44ab6f1 AK |
1054 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1055 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1056 | &vpn->prd); | |
9bcb3eef | 1057 | if (global_dest) { |
d62a17ae | 1058 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1059 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1060 | |
d62a17ae | 1061 | /* Schedule for processing - withdraws to peers happen from |
1062 | * this table. | |
1063 | */ | |
40381db7 | 1064 | if (pi) |
9bcb3eef DS |
1065 | bgp_process(bgp, global_dest, afi, safi); |
1066 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1067 | } |
128ea8ab | 1068 | |
d62a17ae | 1069 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1070 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1071 | } |
1072 | ||
1073 | /* | |
1074 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1075 | * if appropriate. | |
c44ab6f1 | 1076 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1077 | */ |
c44ab6f1 | 1078 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1079 | struct bgp_dest *dest) |
d62a17ae | 1080 | { |
4b7e6066 DS |
1081 | struct bgp_path_info *old_select, *new_select; |
1082 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1083 | afi_t afi = AFI_L2VPN; |
1084 | safi_t safi = SAFI_EVPN; | |
1085 | int ret = 0; | |
1086 | ||
1087 | /* Compute the best path. */ | |
9bcb3eef | 1088 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1089 | afi, safi); |
1090 | old_select = old_and_new.old; | |
1091 | new_select = old_and_new.new; | |
1092 | ||
1093 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1094 | * update to zebra RIB. |
1095 | * Remote routes and SYNC route (i.e. local routes with | |
1096 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1097 | * change. | |
d62a17ae | 1098 | */ |
1099 | if (old_select && old_select == new_select | |
1100 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1101 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1102 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1103 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1104 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1105 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1106 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1107 | ret = evpn_zebra_install( |
9bcb3eef DS |
1108 | bgp, vpn, |
1109 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1110 | dest), | |
d594a14c | 1111 | old_select); |
1defdda8 | 1112 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1113 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1114 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1115 | return ret; |
1116 | } | |
1117 | ||
1118 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1119 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1120 | |
1121 | /* bestpath has changed; update relevant fields and install or uninstall | |
1122 | * into the zebra RIB. | |
1123 | */ | |
1124 | if (old_select || new_select) | |
9bcb3eef | 1125 | bgp_bump_version(dest); |
d62a17ae | 1126 | |
1127 | if (old_select) | |
9bcb3eef | 1128 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1129 | if (new_select) { |
9bcb3eef DS |
1130 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1131 | bgp_path_info_unset_flag(dest, new_select, | |
1132 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1133 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1134 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1135 | } |
1136 | ||
9c7edc03 AK |
1137 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1138 | * to zebra | |
1139 | */ | |
d62a17ae | 1140 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1141 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1142 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1143 | ret = evpn_zebra_install( |
9bcb3eef DS |
1144 | bgp, vpn, |
1145 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1146 | new_select); |
d594a14c | 1147 | |
d62a17ae | 1148 | /* If an old best existed and it was a "local" route, the only |
1149 | * reason | |
1150 | * it would be supplanted is due to MAC mobility procedures. So, | |
1151 | * we | |
1152 | * need to do an implicit delete and withdraw that route from | |
1153 | * peers. | |
1154 | */ | |
9c7edc03 AK |
1155 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1156 | old_select && old_select->peer == bgp->peer_self | |
1157 | && old_select->type == ZEBRA_ROUTE_BGP | |
1158 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1159 | && vpn) | |
1160 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1161 | old_select, new_select); | |
d62a17ae | 1162 | } else { |
1163 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1164 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1165 | ret = evpn_zebra_uninstall( |
1166 | bgp, vpn, | |
9bcb3eef DS |
1167 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1168 | dest), | |
b54892e0 | 1169 | old_select->attr->nexthop); |
d62a17ae | 1170 | } |
1171 | ||
1172 | /* Clear any route change flags. */ | |
9bcb3eef | 1173 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1174 | |
18ee8310 | 1175 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1176 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1177 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1178 | |
1179 | return ret; | |
128ea8ab | 1180 | } |
1181 | ||
9c7edc03 AK |
1182 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1183 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1184 | { |
40381db7 | 1185 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1186 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1187 | |
9bcb3eef | 1188 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1189 | tmp_pi = tmp_pi->next) { |
1190 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1191 | local_pi = tmp_pi; |
9c7edc03 AK |
1192 | break; |
1193 | } | |
d62a17ae | 1194 | } |
c85c03c7 | 1195 | |
9c7edc03 | 1196 | return local_pi; |
c85c03c7 | 1197 | } |
1198 | ||
5e53dce3 | 1199 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1200 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1201 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1202 | struct attr *attr, int *route_changed) |
342dd0c6 | 1203 | { |
1204 | struct attr *attr_new = NULL; | |
40381db7 | 1205 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1206 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1207 | struct bgp_path_info *local_pi = NULL; |
1208 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1209 | |
5424b7ba | 1210 | *route_changed = 0; |
342dd0c6 | 1211 | /* locate the local route entry if any */ |
9bcb3eef | 1212 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1213 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1214 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1215 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1216 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1217 | local_pi = tmp_pi; | |
342dd0c6 | 1218 | } |
1219 | ||
2bb9eff4 | 1220 | /* |
0437e105 | 1221 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1222 | * Otherwise see if route attr has changed |
523cafc4 | 1223 | */ |
40381db7 | 1224 | if (!local_pi) { |
342dd0c6 | 1225 | |
5424b7ba MK |
1226 | /* route has changed as this is the first entry */ |
1227 | *route_changed = 1; | |
1228 | ||
342dd0c6 | 1229 | /* Add (or update) attribute to hash. */ |
1230 | attr_new = bgp_attr_intern(attr); | |
1231 | ||
1232 | /* create the route info from attribute */ | |
40381db7 | 1233 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1234 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1235 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1236 | |
b57ba6d2 | 1237 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1238 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1239 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1240 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1241 | pi->extra->num_labels = 1; | |
342dd0c6 | 1242 | |
1243 | /* add the route entry to route node*/ | |
9bcb3eef | 1244 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1245 | } else { |
1246 | ||
40381db7 DS |
1247 | tmp_pi = local_pi; |
1248 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1249 | |
1250 | /* attribute changed */ | |
1251 | *route_changed = 1; | |
1252 | ||
342dd0c6 | 1253 | /* The attribute has changed. */ |
1254 | /* Add (or update) attribute to hash. */ | |
1255 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1256 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1257 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1258 | |
1259 | /* Restore route, if needed. */ | |
40381db7 | 1260 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1261 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1262 | |
1263 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1264 | bgp_attr_unintern(&tmp_pi->attr); |
1265 | tmp_pi->attr = attr_new; | |
1266 | tmp_pi->uptime = bgp_clock(); | |
342dd0c6 | 1267 | } |
1268 | } | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | /* update evpn type-5 route entry */ | |
996c9314 LB |
1273 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
1274 | struct attr *src_attr) | |
342dd0c6 | 1275 | { |
1276 | afi_t afi = AFI_L2VPN; | |
1277 | safi_t safi = SAFI_EVPN; | |
1278 | struct attr attr; | |
9bcb3eef | 1279 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1280 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1281 | int route_changed = 0; |
342dd0c6 | 1282 | |
5e53dce3 T |
1283 | bgp_evpn = bgp_get_evpn(); |
1284 | if (!bgp_evpn) | |
faafdfa8 | 1285 | return 0; |
342dd0c6 | 1286 | |
2f69f6d3 | 1287 | /* Build path attribute for this route - use the source attr, if |
1288 | * present, else treat as locally originated. | |
1289 | */ | |
1290 | if (src_attr) | |
6f4f49b2 | 1291 | attr = *src_attr; |
2f69f6d3 | 1292 | else { |
1293 | memset(&attr, 0, sizeof(struct attr)); | |
1294 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1295 | } | |
5394a276 | 1296 | |
5394a276 CS |
1297 | /* Advertise Primary IP (PIP) is enabled, send individual |
1298 | * IP (default instance router-id) as nexthop. | |
1299 | * PIP is disabled or vrr interface is not present | |
27727001 | 1300 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1301 | */ |
1302 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1303 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1304 | attr.nexthop = bgp_vrf->originator_ip; | |
1305 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1306 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1307 | } else { |
27727001 CS |
1308 | /* copy sys rmac */ |
1309 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1310 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1311 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1312 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1313 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
1314 | if (bgp_debug_zebra(NULL)) { | |
1315 | char buf1[PREFIX_STRLEN]; | |
1316 | ||
1317 | zlog_debug("VRF %s evp %s advertise-pip primary ip is not configured", | |
1318 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1319 | prefix2str(evp, buf1, sizeof(buf1))); | |
1320 | } | |
1321 | } | |
1322 | ||
1323 | if (bgp_debug_zebra(NULL)) { | |
1324 | char buf[ETHER_ADDR_STRLEN]; | |
1325 | char buf1[PREFIX_STRLEN]; | |
1c97c9fd | 1326 | char buf2[INET6_ADDRSTRLEN]; |
5394a276 CS |
1327 | |
1328 | zlog_debug("VRF %s type-5 route evp %s RMAC %s nexthop %s", | |
1329 | vrf_id_to_name(bgp_vrf->vrf_id), | |
1330 | prefix2str(evp, buf1, sizeof(buf1)), | |
1331 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
1c97c9fd CS |
1332 | inet_ntop(AF_INET, &attr.nexthop, buf2, |
1333 | INET_ADDRSTRLEN)); | |
5394a276 CS |
1334 | } |
1335 | ||
342dd0c6 | 1336 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1337 | |
1338 | /* Setup RT and encap extended community */ | |
1339 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1340 | ||
1341 | /* get the route node in global table */ | |
c44ab6f1 AK |
1342 | dest = bgp_global_evpn_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1343 | (const struct prefix_evpn *)evp, | |
1344 | &bgp_vrf->vrf_prd); | |
9bcb3eef | 1345 | assert(dest); |
342dd0c6 | 1346 | |
1347 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1348 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1349 | &route_changed); |
342dd0c6 | 1350 | |
1351 | /* schedule for processing and unlock node */ | |
5424b7ba | 1352 | if (route_changed) { |
9bcb3eef DS |
1353 | bgp_process(bgp_evpn, dest, afi, safi); |
1354 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1355 | } |
342dd0c6 | 1356 | |
1357 | /* uninten temporary */ | |
5ee65f6f | 1358 | if (!src_attr) |
1359 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1360 | return 0; |
1361 | } | |
1362 | ||
9c7edc03 | 1363 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1364 | struct bgp_dest *dest, uint32_t loc_seq, |
1365 | uint32_t *max_sync_seq, bool *active_on_peer, | |
1366 | bool *peer_router, bool *proxy_from_peer) | |
9c7edc03 AK |
1367 | { |
1368 | struct bgp_path_info *tmp_pi; | |
1369 | struct bgp_path_info *second_best_path = NULL; | |
1370 | uint32_t tmp_mm_seq = 0; | |
1371 | esi_t *tmp_esi; | |
1372 | int paths_eq; | |
1373 | ||
1374 | /* find the best non-local path. a local path can only be present | |
1375 | * as best path | |
1376 | */ | |
09319b4e DS |
1377 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1378 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1379 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1380 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1381 | continue; | |
1382 | ||
1383 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, | |
1384 | second_best_path, &paths_eq)) | |
1385 | second_best_path = tmp_pi; | |
1386 | } | |
1387 | ||
1388 | if (!second_best_path) | |
1389 | return; | |
1390 | ||
1391 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1392 | /* if this has the same ES desination as the local path | |
1393 | * it is a sync path | |
1394 | */ | |
1395 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1396 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1397 | if (tmp_mm_seq < loc_seq) | |
1398 | return; | |
1399 | ||
1400 | /* we have a non-proxy path from the ES peer. */ | |
1401 | if (second_best_path->attr->es_flags & | |
1402 | ATTR_ES_PROXY_ADVERT) { | |
1403 | *proxy_from_peer = true; | |
1404 | } else { | |
1405 | *active_on_peer = true; | |
1406 | } | |
1407 | ||
1408 | if (second_best_path->attr->router_flag) | |
1409 | *peer_router = true; | |
1410 | ||
1411 | /* we use both proxy and non-proxy imports to | |
1412 | * determine the max sync sequence | |
1413 | */ | |
1414 | if (tmp_mm_seq > *max_sync_seq) | |
1415 | *max_sync_seq = tmp_mm_seq; | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1420 | * This is need for MM sequence number syncing and proxy advertisement. | |
1421 | * Note: The local path can only exist as a best path in the | |
1422 | * VPN route table. It will take precedence over all sync paths. | |
1423 | */ | |
1424 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1425 | struct bgp_dest *dest, |
1426 | struct attr *attr, | |
1427 | uint32_t loc_seq, bool setup_sync) | |
9c7edc03 AK |
1428 | { |
1429 | esi_t *esi; | |
752eed47 DS |
1430 | struct prefix_evpn *evp = |
1431 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1432 | |
1433 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1434 | return; | |
1435 | ||
1436 | esi = bgp_evpn_attr_get_esi(attr); | |
1437 | if (bgp_evpn_is_esi_valid(esi)) { | |
1438 | if (setup_sync) { | |
1439 | uint32_t max_sync_seq = 0; | |
1440 | bool active_on_peer = false; | |
1441 | bool peer_router = false; | |
1442 | bool proxy_from_peer = false; | |
1443 | ||
09319b4e DS |
1444 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1445 | &max_sync_seq, &active_on_peer, | |
1446 | &peer_router, &proxy_from_peer); | |
9c7edc03 AK |
1447 | attr->mm_sync_seqnum = max_sync_seq; |
1448 | if (active_on_peer) | |
1449 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1450 | else | |
1451 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1452 | if (proxy_from_peer) | |
1453 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1454 | else | |
1455 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1456 | if (peer_router) | |
1457 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1458 | else | |
1459 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1460 | ||
1461 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
1462 | char prefix_buf[PREFIX_STRLEN]; | |
1463 | char esi_buf[ESI_STR_LEN]; | |
1464 | ||
1465 | zlog_debug("setup sync info for %s es %s max_seq %d %s%s%s", | |
1466 | prefix2str(evp, prefix_buf, | |
1467 | sizeof(prefix_buf)), | |
1468 | esi_to_str(esi, esi_buf, | |
1469 | sizeof(esi_buf)), | |
1470 | max_sync_seq, | |
1471 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) ? | |
1472 | "peer-active " : "", | |
1473 | (attr->es_flags & ATTR_ES_PEER_PROXY) ? | |
1474 | "peer-proxy " : "", | |
1475 | (attr->es_flags & ATTR_ES_PEER_ROUTER) ? | |
1476 | "peer-router " : ""); | |
1477 | } | |
1478 | } | |
1479 | } else { | |
1480 | attr->mm_sync_seqnum = 0; | |
1481 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1482 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1483 | } | |
1484 | } | |
1485 | ||
128ea8ab | 1486 | /* |
1487 | * Create or update EVPN route entry. This could be in the VNI route table | |
1488 | * or the global route table. | |
1489 | */ | |
d62a17ae | 1490 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
9c7edc03 AK |
1491 | afi_t afi, safi_t safi, struct bgp_dest *dest, |
1492 | struct attr *attr, int add, | |
1493 | struct bgp_path_info **pi, uint8_t flags, | |
1494 | uint32_t seq, bool setup_sync, | |
1495 | bool *old_is_sync) | |
d62a17ae | 1496 | { |
40381db7 DS |
1497 | struct bgp_path_info *tmp_pi; |
1498 | struct bgp_path_info *local_pi; | |
d62a17ae | 1499 | struct attr *attr_new; |
b57ba6d2 | 1500 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1501 | uint32_t num_labels = 1; |
d62a17ae | 1502 | int route_change = 1; |
d7c0a89a | 1503 | uint8_t sticky = 0; |
b54892e0 | 1504 | const struct prefix_evpn *evp; |
d62a17ae | 1505 | |
40381db7 | 1506 | *pi = NULL; |
9bcb3eef | 1507 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1508 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1509 | |
f07e1c99 | 1510 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1511 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1512 | |
1513 | /* If route doesn't exist already, create a new one, if told to. | |
1514 | * Otherwise act based on whether the attributes of the route have | |
1515 | * changed or not. | |
1516 | */ | |
40381db7 | 1517 | if (!local_pi && !add) |
d62a17ae | 1518 | return 0; |
1519 | ||
9c7edc03 AK |
1520 | if (old_is_sync && local_pi) |
1521 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1522 | ||
1523 | /* if a local path is being added with a non-zero esi look | |
1524 | * for SYNC paths from ES peers and bubble up the sync-info | |
1525 | */ | |
1526 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, setup_sync); | |
1527 | ||
f07e1c99 | 1528 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1529 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1530 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1531 | |
40381db7 | 1532 | if (!local_pi) { |
d62a17ae | 1533 | /* Add (or update) attribute to hash. */ |
1534 | attr_new = bgp_attr_intern(attr); | |
1535 | ||
1536 | /* Extract MAC mobility sequence number, if any. */ | |
1537 | attr_new->mm_seqnum = | |
1538 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1539 | attr_new->sticky = sticky; | |
1540 | ||
1541 | /* Create new route with its attribute. */ | |
40381db7 | 1542 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1543 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1544 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1545 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1546 | |
1547 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1548 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1549 | |
1550 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1551 | * Only attach second label if we are advertising two labels for | |
1552 | * type-2 routes. | |
1553 | */ | |
996c9314 LB |
1554 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1555 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1556 | vni_t l3vni; |
1557 | ||
1558 | l3vni = bgpevpn_get_l3vni(vpn); | |
1559 | if (l3vni) { | |
1560 | vni2label(l3vni, &label[1]); | |
1561 | num_labels++; | |
1562 | } | |
1563 | } | |
d62a17ae | 1564 | |
40381db7 DS |
1565 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1566 | tmp_pi->extra->num_labels = num_labels; | |
0ca10580 CS |
1567 | /* Mark route as self type-2 route */ |
1568 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1569 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1570 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1571 | } else { |
40381db7 DS |
1572 | tmp_pi = local_pi; |
1573 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1574 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1575 | route_change = 0; |
1576 | else { | |
c48d9f5f MK |
1577 | /* |
1578 | * The attributes have changed, type-2 routes needs to | |
1579 | * be advertised with right labels. | |
1580 | */ | |
1581 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1582 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1583 | && CHECK_FLAG(vpn->flags, | |
1584 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1585 | vni_t l3vni; |
1586 | ||
1587 | l3vni = bgpevpn_get_l3vni(vpn); | |
1588 | if (l3vni) { | |
1589 | vni2label(l3vni, &label[1]); | |
1590 | num_labels++; | |
1591 | } | |
1592 | } | |
40381db7 DS |
1593 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1594 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1595 | |
d62a17ae | 1596 | /* The attribute has changed. */ |
1597 | /* Add (or update) attribute to hash. */ | |
1598 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1599 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1600 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1601 | |
f07e1c99 | 1602 | /* Extract MAC mobility sequence number, if any. */ |
1603 | attr_new->mm_seqnum = | |
1604 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1605 | attr_new->sticky = sticky; | |
1606 | ||
d62a17ae | 1607 | /* Restore route, if needed. */ |
40381db7 | 1608 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1609 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1610 | |
1611 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1612 | bgp_attr_unintern(&tmp_pi->attr); |
1613 | tmp_pi->attr = attr_new; | |
1614 | tmp_pi->uptime = bgp_clock(); | |
d62a17ae | 1615 | } |
1616 | } | |
1617 | ||
1618 | /* Return back the route entry. */ | |
40381db7 | 1619 | *pi = tmp_pi; |
d62a17ae | 1620 | return route_change; |
128ea8ab | 1621 | } |
1622 | ||
ec0ab544 | 1623 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1624 | struct bgpevpn *vpn, |
1625 | struct bgp_dest *dest) | |
ec0ab544 AK |
1626 | { |
1627 | struct bgp_path_info *tmp_ri; | |
1628 | struct bgp_path_info *curr_select = NULL; | |
1629 | ||
9bcb3eef DS |
1630 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
1631 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
1632 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
1633 | curr_select = tmp_ri; | |
1634 | break; | |
1635 | } | |
1636 | } | |
1637 | ||
1638 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1639 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
1640 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
1641 | evpn_zebra_install(bgp, vpn, | |
1642 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1643 | curr_select); | |
ec0ab544 AK |
1644 | } |
1645 | ||
6d8c603a AK |
1646 | /* |
1647 | * If the local route was not selected evict it and tell zebra to re-add | |
1648 | * the best remote dest. | |
1649 | * | |
1650 | * Typically a local path added by zebra is expected to be selected as | |
1651 | * best. In which case when a remote path wins as best (later) | |
1652 | * evpn_route_select_install itself evicts the older-local-best path. | |
1653 | * | |
1654 | * However if bgp's add and zebra's add cross paths (race condition) it | |
1655 | * is possible that the local path is no longer the "older" best path. | |
1656 | * It is a path that was never designated as best and hence requires | |
1657 | * additional handling to prevent bgp from injecting and holding on to a | |
1658 | * non-best local path. | |
1659 | */ | |
1660 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
1661 | struct bgpevpn *vpn, | |
9bcb3eef | 1662 | struct bgp_dest *dest, |
9a8897aa | 1663 | struct bgp_path_info *local_pi) |
6d8c603a | 1664 | { |
6d8c603a | 1665 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 1666 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 1667 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 1668 | dest); |
b54892e0 | 1669 | |
9c7edc03 | 1670 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 1671 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
1672 | |
1673 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 1674 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
1675 | } |
1676 | ||
128ea8ab | 1677 | /* |
1678 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
1679 | * and schedule for processing. | |
1680 | */ | |
d62a17ae | 1681 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 1682 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 1683 | uint32_t seq, esi_t *esi) |
128ea8ab | 1684 | { |
9bcb3eef | 1685 | struct bgp_dest *dest; |
d62a17ae | 1686 | struct attr attr; |
1687 | struct attr *attr_new; | |
1ec31309 | 1688 | int add_l3_ecomm = 0; |
40381db7 | 1689 | struct bgp_path_info *pi; |
d62a17ae | 1690 | afi_t afi = AFI_L2VPN; |
1691 | safi_t safi = SAFI_EVPN; | |
1692 | int route_change; | |
9c7edc03 | 1693 | bool old_is_sync = false; |
128ea8ab | 1694 | |
d62a17ae | 1695 | memset(&attr, 0, sizeof(struct attr)); |
128ea8ab | 1696 | |
d62a17ae | 1697 | /* Build path-attribute for this route. */ |
1698 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1699 | attr.nexthop = vpn->originator_ip; | |
1700 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1701 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 1702 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 1703 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
1704 | attr.router_flag = CHECK_FLAG(flags, |
1705 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
1706 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
1707 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
1708 | ||
1709 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 1710 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
1711 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
1712 | } | |
1713 | ||
be41eb68 | 1714 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 1715 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 1716 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
d03239d0 AK |
1717 | attr.pmsi_tnl_type = PMSI_TNLTYPE_INGR_REPL; |
1718 | } | |
be41eb68 | 1719 | |
9c7edc03 AK |
1720 | if (bgp_debug_zebra(NULL)) { |
1721 | char buf[ETHER_ADDR_STRLEN]; | |
1722 | char buf1[PREFIX_STRLEN]; | |
1723 | char buf3[ESI_STR_LEN]; | |
1724 | ||
1725 | zlog_debug("VRF %s vni %u type-2 route evp %s RMAC %s nexthop %s esi %s", | |
1726 | vpn->bgp_vrf ? | |
1727 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
1728 | vpn->vni, | |
1729 | prefix2str(p, buf1, sizeof(buf1)), | |
1730 | prefix_mac2str(&attr.rmac, buf, | |
1731 | sizeof(buf)), | |
1732 | inet_ntoa(attr.mp_nexthop_global_in), | |
1733 | esi_to_str(esi, buf3, sizeof(buf3))); | |
1734 | } | |
1ec31309 | 1735 | /* router mac is only needed for type-2 routes here. */ |
0ca10580 CS |
1736 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1737 | uint8_t af_flags = 0; | |
1738 | ||
1739 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1740 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
1741 | ||
1742 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
0ca10580 CS |
1743 | } |
1744 | ||
a21bd7a3 | 1745 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 1746 | |
1ec31309 | 1747 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
1748 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
1749 | * these routes. | |
1750 | */ | |
1751 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && | |
3714a385 | 1752 | (is_evpn_prefix_ipaddr_v4(p) || |
1753 | !IN6_IS_ADDR_LINKLOCAL(&p->prefix.macip_addr.ip.ipaddr_v6)) && | |
148b548c | 1754 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && |
1755 | bgpevpn_get_l3vni(vpn)) | |
1ec31309 | 1756 | add_l3_ecomm = 1; |
1757 | ||
1758 | /* Set up extended community. */ | |
1759 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 1760 | |
d62a17ae | 1761 | /* First, create (or fetch) route node within the VNI. */ |
1762 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 1763 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
128ea8ab | 1764 | |
d62a17ae | 1765 | /* Create or update route entry. */ |
9bcb3eef | 1766 | route_change = update_evpn_route_entry(bgp, vpn, afi, safi, dest, &attr, |
9c7edc03 AK |
1767 | 1, &pi, flags, seq, |
1768 | true /* setup_sync */, &old_is_sync); | |
40381db7 DS |
1769 | assert(pi); |
1770 | attr_new = pi->attr; | |
128ea8ab | 1771 | |
6d8c603a AK |
1772 | /* lock ri to prevent freeing in evpn_route_select_install */ |
1773 | bgp_path_info_lock(pi); | |
7ab604ab CS |
1774 | |
1775 | /* Perform route selection. Normally, the local route in the | |
1776 | * VNI is expected to win and be the best route. However, if | |
1777 | * there is a race condition where a host moved from local to | |
1778 | * remote and the remote route was received in BGP just prior | |
1779 | * to the local MACIP notification from zebra, the remote | |
1780 | * route would win, and we should evict the defunct local route | |
1781 | * and (re)install the remote route into zebra. | |
1782 | */ | |
9bcb3eef | 1783 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 1784 | /* |
9a8897aa AK |
1785 | * If the new local route was not selected evict it and tell zebra |
1786 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
1787 | * routes. | |
6d8c603a | 1788 | */ |
9c7edc03 | 1789 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 1790 | route_change = 0; |
9c7edc03 AK |
1791 | } else { |
1792 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
1793 | route_change = 0; | |
1794 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
1795 | } else { | |
1796 | bool new_is_sync; | |
1797 | ||
1798 | /* If the local path already existed and is still the | |
1799 | * best path we need to also check if it transitioned | |
1800 | * from being a sync path to a non-sync path. If it | |
1801 | * it did we need to notify zebra that the sync-path | |
1802 | * has been removed. | |
1803 | */ | |
1804 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
1805 | if (!new_is_sync && old_is_sync) | |
1806 | evpn_zebra_uninstall(bgp, vpn, p, zero_vtep_ip); | |
1807 | } | |
9a8897aa | 1808 | } |
6d8c603a AK |
1809 | bgp_path_info_unlock(pi); |
1810 | ||
9bcb3eef | 1811 | bgp_dest_unlock_node(dest); |
128ea8ab | 1812 | |
d62a17ae | 1813 | /* If this is a new route or some attribute has changed, export the |
1814 | * route to the global table. The route will be advertised to peers | |
1815 | * from there. Note that this table is a 2-level tree (RD-level + | |
1816 | * Prefix-level) similar to L3VPN routes. | |
1817 | */ | |
1818 | if (route_change) { | |
40381db7 | 1819 | struct bgp_path_info *global_pi; |
128ea8ab | 1820 | |
c44ab6f1 AK |
1821 | dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
1822 | (const struct prefix_evpn *)p, | |
1823 | &vpn->prd); | |
9bcb3eef | 1824 | update_evpn_route_entry(bgp, vpn, afi, safi, dest, attr_new, 1, |
9c7edc03 AK |
1825 | &global_pi, flags, seq, |
1826 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 1827 | |
d62a17ae | 1828 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
1829 | bgp_process(bgp, dest, afi, safi); |
1830 | bgp_dest_unlock_node(dest); | |
d62a17ae | 1831 | } |
128ea8ab | 1832 | |
d62a17ae | 1833 | /* Unintern temporary. */ |
1834 | aspath_unintern(&attr.aspath); | |
128ea8ab | 1835 | |
d62a17ae | 1836 | return 0; |
128ea8ab | 1837 | } |
1838 | ||
50f74cf1 | 1839 | /* |
1840 | * Delete EVPN route entry. | |
1841 | * The entry can be in ESI/VNI table or the global table. | |
1842 | */ | |
185fb14a | 1843 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 1844 | struct bgp_dest *dest, |
40381db7 | 1845 | struct bgp_path_info **pi) |
342dd0c6 | 1846 | { |
40381db7 | 1847 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 1848 | |
40381db7 | 1849 | *pi = NULL; |
342dd0c6 | 1850 | |
50f74cf1 | 1851 | /* Now, find matching route. */ |
9bcb3eef | 1852 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1853 | tmp_pi = tmp_pi->next) |
40381db7 DS |
1854 | if (tmp_pi->peer == bgp->peer_self |
1855 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
1856 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 1857 | break; |
1858 | ||
40381db7 | 1859 | *pi = tmp_pi; |
342dd0c6 | 1860 | |
1861 | /* Mark route for delete. */ | |
40381db7 | 1862 | if (tmp_pi) |
9bcb3eef | 1863 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 1864 | } |
1865 | ||
1866 | /* Delete EVPN type5 route */ | |
996c9314 | 1867 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 1868 | { |
1869 | afi_t afi = AFI_L2VPN; | |
1870 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 1871 | struct bgp_dest *dest = NULL; |
40381db7 | 1872 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 1873 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 1874 | |
5e53dce3 T |
1875 | bgp_evpn = bgp_get_evpn(); |
1876 | if (!bgp_evpn) | |
faafdfa8 | 1877 | return 0; |
342dd0c6 | 1878 | |
1879 | /* locate the global route entry for this type-5 prefix */ | |
c44ab6f1 AK |
1880 | dest = bgp_global_evpn_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
1881 | (const struct prefix_evpn *)evp, &bgp_vrf->vrf_prd); | |
9bcb3eef | 1882 | if (!dest) |
342dd0c6 | 1883 | return 0; |
1884 | ||
9bcb3eef | 1885 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 1886 | if (pi) |
9bcb3eef DS |
1887 | bgp_process(bgp_evpn, dest, afi, safi); |
1888 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 1889 | return 0; |
1890 | } | |
1891 | ||
128ea8ab | 1892 | /* |
1893 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
1894 | * schedule for processing. | |
1895 | */ | |
d62a17ae | 1896 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
1897 | struct prefix_evpn *p) | |
1898 | { | |
9bcb3eef | 1899 | struct bgp_dest *dest, *global_dest; |
40381db7 | 1900 | struct bgp_path_info *pi; |
d62a17ae | 1901 | afi_t afi = AFI_L2VPN; |
1902 | safi_t safi = SAFI_EVPN; | |
1903 | ||
1904 | /* First, locate the route node within the VNI. If it doesn't exist, | |
1905 | * there | |
1906 | * is nothing further to do. | |
1907 | */ | |
1908 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
1909 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
1910 | if (!dest) | |
d62a17ae | 1911 | return 0; |
1912 | ||
1913 | /* Next, locate route node in the global EVPN routing table. Note that | |
1914 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1915 | * L3VPN routes. | |
1916 | */ | |
c44ab6f1 AK |
1917 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
1918 | (const struct prefix_evpn *)p, &vpn->prd); | |
9bcb3eef | 1919 | if (global_dest) { |
d62a17ae | 1920 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1921 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 1922 | |
1923 | /* Schedule for processing - withdraws to peers happen from | |
1924 | * this table. | |
1925 | */ | |
40381db7 | 1926 | if (pi) |
9bcb3eef DS |
1927 | bgp_process(bgp, global_dest, afi, safi); |
1928 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1929 | } |
1930 | ||
1931 | /* Delete route entry in the VNI route table. This can just be removed. | |
1932 | */ | |
9bcb3eef | 1933 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 1934 | if (pi) { |
9bcb3eef DS |
1935 | bgp_path_info_reap(dest, pi); |
1936 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 1937 | } |
9bcb3eef | 1938 | bgp_dest_unlock_node(dest); |
d62a17ae | 1939 | |
1940 | return 0; | |
128ea8ab | 1941 | } |
1942 | ||
9c7edc03 | 1943 | static void bgp_evpn_update_type2_route_entry(struct bgp *bgp, |
09319b4e DS |
1944 | struct bgpevpn *vpn, |
1945 | struct bgp_dest *dest, | |
1946 | struct bgp_path_info *local_pi, | |
1947 | const char *caller) | |
9c7edc03 AK |
1948 | { |
1949 | afi_t afi = AFI_L2VPN; | |
1950 | safi_t safi = SAFI_EVPN; | |
1951 | struct bgp_path_info *pi; | |
1952 | struct attr attr; | |
1953 | struct attr *attr_new; | |
1954 | uint32_t seq; | |
1955 | int add_l3_ecomm = 0; | |
09319b4e | 1956 | struct bgp_dest *global_dest; |
9c7edc03 | 1957 | struct bgp_path_info *global_pi; |
752eed47 DS |
1958 | struct prefix_evpn *evp = |
1959 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1960 | int route_change; |
1961 | bool old_is_sync = false; | |
1962 | ||
1963 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
1964 | return; | |
1965 | ||
1966 | /* | |
1967 | * Build attribute per local route as the MAC mobility and | |
1968 | * some other values could differ for different routes. The | |
1969 | * attributes will be shared in the hash table. | |
1970 | */ | |
1971 | bgp_attr_default_set(&attr, BGP_ORIGIN_IGP); | |
1972 | attr.nexthop = vpn->originator_ip; | |
1973 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
1974 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
1975 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
1976 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
1977 | attr.es_flags = local_pi->attr->es_flags; | |
1978 | if (local_pi->attr->default_gw) { | |
1979 | attr.default_gw = 1; | |
1980 | if (is_evpn_prefix_ipaddr_v6(evp)) | |
1981 | attr.router_flag = 1; | |
1982 | } | |
1983 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
1984 | bgp_evpn_get_rmac_nexthop(vpn, evp, &attr, | |
1985 | local_pi->extra->af_flags); | |
1986 | vni2label(vpn->vni, &(attr.label)); | |
1987 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
1988 | * using L3 VNI for type-2 routes also. | |
1989 | */ | |
1990 | if ((is_evpn_prefix_ipaddr_v4(evp) || | |
1991 | !IN6_IS_ADDR_LINKLOCAL( | |
1992 | &evp->prefix.macip_addr.ip.ipaddr_v6)) && | |
1993 | CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) && | |
1994 | bgpevpn_get_l3vni(vpn)) | |
1995 | add_l3_ecomm = 1; | |
1996 | ||
1997 | /* Set up extended community. */ | |
1998 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
1999 | seq = mac_mobility_seqnum(local_pi->attr); | |
2000 | ||
2001 | if (bgp_debug_zebra(NULL)) { | |
2002 | char buf[ETHER_ADDR_STRLEN]; | |
2003 | char buf1[PREFIX_STRLEN]; | |
2004 | char buf3[ESI_STR_LEN]; | |
2005 | ||
2006 | zlog_debug("VRF %s vni %u evp %s RMAC %s nexthop %s esi %s esf 0x%x from %s", | |
2007 | vpn->bgp_vrf ? | |
2008 | vrf_id_to_name(vpn->bgp_vrf->vrf_id) : " ", | |
2009 | vpn->vni, | |
2010 | prefix2str(evp, buf1, sizeof(buf1)), | |
2011 | prefix_mac2str(&attr.rmac, buf, sizeof(buf)), | |
2012 | inet_ntoa(attr.mp_nexthop_global_in), | |
2013 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), | |
2014 | attr.es_flags, caller); | |
2015 | } | |
2016 | ||
2017 | /* Update the route entry. */ | |
09319b4e DS |
2018 | route_change = update_evpn_route_entry( |
2019 | bgp, vpn, afi, safi, dest, &attr, 0, &pi, 0, seq, | |
2020 | true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2021 | |
2022 | assert(pi); | |
2023 | attr_new = pi->attr; | |
2024 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2025 | bgp_path_info_lock(pi); | |
2026 | ||
2027 | /* Perform route selection. Normally, the local route in the | |
2028 | * VNI is expected to win and be the best route. However, | |
2029 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2030 | * that causes best selection to be based on next hop), a | |
2031 | * remote route could win. If the local route is the best, | |
2032 | * ensure it is updated in the global EVPN route table and | |
2033 | * advertised to peers; otherwise, ensure it is evicted and | |
2034 | * (re)install the remote route into zebra. | |
2035 | */ | |
09319b4e | 2036 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2037 | |
2038 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2039 | route_change = 0; | |
2040 | } else { | |
2041 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2042 | route_change = 0; | |
09319b4e | 2043 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2044 | } else { |
2045 | bool new_is_sync; | |
2046 | ||
2047 | /* If the local path already existed and is still the | |
2048 | * best path we need to also check if it transitioned | |
2049 | * from being a sync path to a non-sync path. If it | |
2050 | * it did we need to notify zebra that the sync-path | |
2051 | * has been removed. | |
2052 | */ | |
2053 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2054 | if (!new_is_sync && old_is_sync) | |
2055 | evpn_zebra_uninstall(bgp, vpn, | |
2056 | evp, zero_vtep_ip); | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | ||
2061 | /* unlock pi */ | |
2062 | bgp_path_info_unlock(pi); | |
2063 | ||
2064 | if (route_change) { | |
2065 | /* Update route in global routing table. */ | |
09319b4e DS |
2066 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, |
2067 | safi, evp, &vpn->prd); | |
2068 | assert(global_dest); | |
2069 | update_evpn_route_entry( | |
2070 | bgp, vpn, afi, safi, global_dest, attr_new, 0, | |
2071 | &global_pi, 0, mac_mobility_seqnum(attr_new), | |
2072 | false /* setup_sync */, NULL /* old_is_sync */); | |
9c7edc03 AK |
2073 | |
2074 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2075 | bgp_process(bgp, global_dest, afi, safi); |
2076 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2077 | } |
2078 | ||
2079 | /* Unintern temporary. */ | |
2080 | aspath_unintern(&attr.aspath); | |
2081 | } | |
2082 | ||
128ea8ab | 2083 | /* |
2084 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2085 | * be scheduled for advertise to peers. | |
2086 | */ | |
d62a17ae | 2087 | static int update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
2088 | { | |
9bcb3eef | 2089 | struct bgp_dest *dest; |
9c7edc03 | 2090 | struct bgp_path_info *tmp_pi; |
d62a17ae | 2091 | |
2092 | /* Walk this VNI's route table and update local type-2 routes. For any | |
2093 | * routes updated, update corresponding entry in the global table too. | |
2094 | */ | |
9bcb3eef | 2095 | for (dest = bgp_table_top(vpn->route_table); dest; |
9c7edc03 | 2096 | dest = bgp_route_next(dest)) { |
9bcb3eef DS |
2097 | const struct prefix_evpn *evp = |
2098 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
d62a17ae | 2099 | |
2100 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2101 | continue; | |
2102 | ||
f07e1c99 | 2103 | /* Identify local route. */ |
9bcb3eef | 2104 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 | 2105 | tmp_pi = tmp_pi->next) { |
40381db7 | 2106 | if (tmp_pi->peer == bgp->peer_self |
9c7edc03 AK |
2107 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
2108 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
f07e1c99 | 2109 | break; |
7ec156a9 | 2110 | } |
d62a17ae | 2111 | |
40381db7 | 2112 | if (!tmp_pi) |
d62a17ae | 2113 | continue; |
2114 | ||
9c7edc03 AK |
2115 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, |
2116 | __func__); | |
f07e1c99 | 2117 | } |
d62a17ae | 2118 | |
2119 | return 0; | |
128ea8ab | 2120 | } |
2121 | ||
2122 | /* | |
2123 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2124 | * global routing table. These are also scheduled for withdraw from peers. | |
2125 | */ | |
d62a17ae | 2126 | static int delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2127 | { |
d62a17ae | 2128 | afi_t afi; |
2129 | safi_t safi; | |
9bcb3eef | 2130 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2131 | struct bgp_table *table; |
40381db7 | 2132 | struct bgp_path_info *pi; |
128ea8ab | 2133 | |
d62a17ae | 2134 | afi = AFI_L2VPN; |
2135 | safi = SAFI_EVPN; | |
128ea8ab | 2136 | |
9bcb3eef DS |
2137 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2138 | (struct prefix *)&vpn->prd); | |
2139 | if (rddest && bgp_dest_has_bgp_path_info_data(rddest)) { | |
2140 | table = bgp_dest_get_bgp_table_info(rddest); | |
2141 | for (dest = bgp_table_top(table); dest; | |
2142 | dest = bgp_route_next(dest)) { | |
2143 | const struct prefix_evpn *evp = | |
2144 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2145 | dest); | |
128ea8ab | 2146 | |
d62a17ae | 2147 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2148 | continue; | |
128ea8ab | 2149 | |
9bcb3eef | 2150 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2151 | if (pi) |
9bcb3eef | 2152 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2153 | } |
2154 | } | |
128ea8ab | 2155 | |
d62a17ae | 2156 | /* Unlock RD node. */ |
9bcb3eef DS |
2157 | if (rddest) |
2158 | bgp_dest_unlock_node(rddest); | |
128ea8ab | 2159 | |
d62a17ae | 2160 | return 0; |
128ea8ab | 2161 | } |
2162 | ||
2163 | /* | |
2164 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2165 | * table as well as the per-VNI route table. | |
2166 | */ | |
d62a17ae | 2167 | static int delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2168 | { |
d62a17ae | 2169 | afi_t afi; |
2170 | safi_t safi; | |
9bcb3eef | 2171 | struct bgp_dest *dest; |
40381db7 | 2172 | struct bgp_path_info *pi; |
128ea8ab | 2173 | |
d62a17ae | 2174 | afi = AFI_L2VPN; |
2175 | safi = SAFI_EVPN; | |
128ea8ab | 2176 | |
d62a17ae | 2177 | /* First, walk the global route table for this VNI's type-2 local |
2178 | * routes. | |
2179 | * EVPN routes are a 2-level table, first get the RD table. | |
2180 | */ | |
2181 | delete_global_type2_routes(bgp, vpn); | |
128ea8ab | 2182 | |
d62a17ae | 2183 | /* Next, walk this VNI's route table and delete local type-2 routes. */ |
9bcb3eef DS |
2184 | for (dest = bgp_table_top(vpn->route_table); dest; |
2185 | dest = bgp_route_next(dest)) { | |
2186 | const struct prefix_evpn *evp = | |
2187 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
128ea8ab | 2188 | |
d62a17ae | 2189 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2190 | continue; | |
128ea8ab | 2191 | |
9bcb3eef | 2192 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
128ea8ab | 2193 | |
d62a17ae | 2194 | /* Route entry in local table gets deleted immediately. */ |
40381db7 | 2195 | if (pi) |
9bcb3eef | 2196 | bgp_path_info_reap(dest, pi); |
d62a17ae | 2197 | } |
128ea8ab | 2198 | |
d62a17ae | 2199 | return 0; |
128ea8ab | 2200 | } |
2201 | ||
2202 | /* | |
2203 | * Delete all routes in the per-VNI route table. | |
2204 | */ | |
d62a17ae | 2205 | static int delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2206 | { |
9bcb3eef | 2207 | struct bgp_dest *dest; |
40381db7 | 2208 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2209 | |
d62a17ae | 2210 | /* Walk this VNI's route table and delete all routes. */ |
9bcb3eef DS |
2211 | for (dest = bgp_table_top(vpn->route_table); dest; |
2212 | dest = bgp_route_next(dest)) { | |
2213 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2214 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
9bcb3eef DS |
2215 | bgp_path_info_delete(dest, pi); |
2216 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2217 | } |
2218 | } | |
128ea8ab | 2219 | |
d62a17ae | 2220 | return 0; |
128ea8ab | 2221 | } |
2222 | ||
833b8a50 AK |
2223 | /* BUM traffic flood mode per-l2-vni */ |
2224 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2225 | struct bgpevpn *vpn) | |
2226 | { | |
2227 | /* if flooding has been globally disabled per-vni mode is | |
2228 | * not relevant | |
2229 | */ | |
2230 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2231 | return VXLAN_FLOOD_DISABLED; | |
2232 | ||
2233 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2234 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2235 | return VXLAN_FLOOD_PIM_SM; | |
2236 | ||
2237 | /* default is ingress replication */ | |
2238 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2239 | } | |
2240 | ||
128ea8ab | 2241 | /* |
2242 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2243 | * export RT getting modified or change to tunnel IP. Note that these | |
2244 | * situations need the route in the per-VNI table as well as the global | |
2245 | * table to be updated (as attributes change). | |
2246 | */ | |
0ca10580 | 2247 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2248 | { |
d62a17ae | 2249 | int ret; |
2250 | struct prefix_evpn p; | |
128ea8ab | 2251 | |
d62a17ae | 2252 | /* Update and advertise the type-3 route (only one) followed by the |
2253 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2254 | * |
2255 | * RT-3 only if doing head-end replication | |
d62a17ae | 2256 | */ |
833b8a50 AK |
2257 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2258 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2259 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2260 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2261 | if (ret) |
2262 | return ret; | |
2263 | } | |
128ea8ab | 2264 | |
d62a17ae | 2265 | return update_all_type2_routes(bgp, vpn); |
128ea8ab | 2266 | } |
2267 | ||
2268 | /* | |
2269 | * Delete (and withdraw) local routes for specified VNI from the global | |
2270 | * table and per-VNI table. After this, remove all other routes from | |
2271 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2272 | * (advertise-all-vni) being disabled. | |
2273 | */ | |
d62a17ae | 2274 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2275 | { |
d62a17ae | 2276 | int ret; |
2277 | struct prefix_evpn p; | |
128ea8ab | 2278 | |
d62a17ae | 2279 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2280 | * followed by type-3 routes (only one) - for this VNI. | |
2281 | */ | |
2282 | ret = delete_all_type2_routes(bgp, vpn); | |
2283 | if (ret) | |
2284 | return ret; | |
128ea8ab | 2285 | |
d62a17ae | 2286 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2287 | ret = delete_evpn_route(bgp, vpn, &p); | |
2288 | if (ret) | |
2289 | return ret; | |
128ea8ab | 2290 | |
d62a17ae | 2291 | /* Delete all routes from the per-VNI table. */ |
2292 | return delete_all_vni_routes(bgp, vpn); | |
128ea8ab | 2293 | } |
2294 | ||
76d07c7a AK |
2295 | /* |
2296 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2297 | * remove the type-3 route if any. A new type-3 route will be generated | |
2298 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2299 | */ | |
2300 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2301 | struct in_addr mcast_grp) | |
2302 | { | |
2303 | struct prefix_evpn p; | |
2304 | ||
2305 | vpn->mcast_grp = mcast_grp; | |
2306 | ||
2307 | if (is_vni_live(vpn)) { | |
2308 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2309 | delete_evpn_route(bgp, vpn, &p); | |
2310 | } | |
2311 | ||
2312 | return 0; | |
2313 | } | |
2314 | ||
128ea8ab | 2315 | /* |
d1911c26 | 2316 | * There is a tunnel endpoint IP address change for this VNI, delete |
2317 | * prior type-3 route (if needed) and update. | |
2318 | * Note: Route re-advertisement happens elsewhere after other processing | |
2319 | * other changes. | |
128ea8ab | 2320 | */ |
d62a17ae | 2321 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2322 | struct in_addr originator_ip) | |
128ea8ab | 2323 | { |
d62a17ae | 2324 | struct prefix_evpn p; |
128ea8ab | 2325 | |
ddd16ed5 MK |
2326 | /* If VNI is not live, we only need to update the originator ip */ |
2327 | if (!is_vni_live(vpn)) { | |
2328 | vpn->originator_ip = originator_ip; | |
2329 | return 0; | |
2330 | } | |
2331 | ||
db0e1937 MK |
2332 | /* Update the tunnel-ip hash */ |
2333 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2334 | bgp_tip_add(bgp, &originator_ip); | |
2335 | ||
2336 | /* filter routes as martian nexthop db has changed */ | |
2337 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2338 | ||
d62a17ae | 2339 | /* Need to withdraw type-3 route as the originator IP is part |
2340 | * of the key. | |
2341 | */ | |
2342 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2343 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2344 | |
d62a17ae | 2345 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2346 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2347 | return 0; |
185fb14a | 2348 | } |
50f74cf1 | 2349 | |
185fb14a AK |
2350 | static struct bgp_path_info * |
2351 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2352 | struct bgp_dest *dest, struct attr *attr) | |
2353 | { | |
2354 | struct attr *attr_new; | |
2355 | struct bgp_path_info *pi; | |
50f74cf1 | 2356 | |
185fb14a AK |
2357 | /* Add (or update) attribute to hash. */ |
2358 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2359 | |
185fb14a AK |
2360 | /* Create new route with its attribute. */ |
2361 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2362 | attr_new, dest); | |
2363 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2364 | bgp_path_info_extra_get(pi); | |
2365 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2366 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2367 | if (parent_pi->extra) { | |
2368 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2369 | sizeof(pi->extra->label)); | |
2370 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
50f74cf1 | 2371 | } |
185fb14a | 2372 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2373 | |
185fb14a | 2374 | return pi; |
50f74cf1 | 2375 | } |
2376 | ||
d3135ba3 | 2377 | /* |
2378 | * Install route entry into the VRF routing table and invoke route selection. | |
2379 | */ | |
2380 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2381 | const struct prefix_evpn *evp, |
40381db7 | 2382 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2383 | { |
9bcb3eef | 2384 | struct bgp_dest *dest; |
40381db7 | 2385 | struct bgp_path_info *pi; |
1ec31309 | 2386 | struct attr attr; |
d3135ba3 | 2387 | struct attr *attr_new; |
c4edf708 | 2388 | int ret = 0; |
d3135ba3 | 2389 | struct prefix p; |
2390 | struct prefix *pp = &p; | |
2391 | afi_t afi = 0; | |
2392 | safi_t safi = 0; | |
1eb88002 | 2393 | char buf[PREFIX_STRLEN]; |
5f0c5ec8 | 2394 | bool new_pi = false; |
d3135ba3 | 2395 | |
2396 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2397 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2398 | |
1eb88002 | 2399 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2400 | zlog_debug( |
5f0c5ec8 | 2401 | "vrf %s: import evpn prefix %s parent %p flags 0x%x", |
2402 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2403 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2404 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2405 | } |
2406 | ||
d3135ba3 | 2407 | /* Create (or fetch) route within the VRF. */ |
2408 | /* NOTE: There is no RD here. */ | |
3714a385 | 2409 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2410 | afi = AFI_IP; |
2411 | safi = SAFI_UNICAST; | |
9bcb3eef | 2412 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2413 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2414 | afi = AFI_IP6; |
2415 | safi = SAFI_UNICAST; | |
9bcb3eef | 2416 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2417 | } else |
2418 | return 0; | |
2419 | ||
1ec31309 | 2420 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2421 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2422 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2423 | * address for the rest of the code to flow through. In the case of IPv4, | |
2424 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2425 | */ |
6f4f49b2 | 2426 | attr = *parent_pi->attr; |
1ec31309 | 2427 | if (afi == AFI_IP6) |
2428 | evpn_convert_nexthop_to_ipv6(&attr); | |
450e362d | 2429 | else |
2430 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); | |
1ec31309 | 2431 | |
d3135ba3 | 2432 | /* Check if route entry is already present. */ |
9bcb3eef | 2433 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2434 | if (pi->extra |
2435 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2436 | break; |
2437 | ||
5f0c5ec8 | 2438 | if (!pi) { |
9bcb3eef | 2439 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2440 | new_pi = true; |
2441 | } else { | |
40381db7 DS |
2442 | if (attrhash_cmp(pi->attr, &attr) |
2443 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2444 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2445 | return 0; |
2446 | } | |
2447 | /* The attribute has changed. */ | |
2448 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2449 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2450 | |
2451 | /* Restore route, if needed. */ | |
40381db7 | 2452 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2453 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2454 | |
2455 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2456 | if ((afi == AFI_IP |
2457 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2458 | || (afi == AFI_IP6 | |
2459 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2460 | &attr_new->mp_nexthop_global))) | |
2461 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2462 | |
9bcb3eef | 2463 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2464 | /* Unintern existing, set to new. */ |
40381db7 DS |
2465 | bgp_attr_unintern(&pi->attr); |
2466 | pi->attr = attr_new; | |
2467 | pi->uptime = bgp_clock(); | |
d3135ba3 | 2468 | } |
d846e917 | 2469 | /* as it is an importation, change nexthop */ |
9bcb3eef | 2470 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); |
d3135ba3 | 2471 | |
9bcb3eef | 2472 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2473 | safi); |
b49cdf4c | 2474 | |
d3135ba3 | 2475 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2476 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2477 | |
7452e879 | 2478 | /* Process for route leaking. */ |
2479 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2480 | ||
9bcb3eef | 2481 | bgp_dest_unlock_node(dest); |
3c11d70a | 2482 | |
5f0c5ec8 | 2483 | if (bgp_debug_zebra(NULL)) |
2484 | zlog_debug( | |
9bcb3eef | 2485 | "... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
5f0c5ec8 | 2486 | new_pi ? "new" : "update", |
9bcb3eef DS |
2487 | dest, bgp_dest_to_rnode(dest)->lock, |
2488 | pi, pi->lock, pi->flags); | |
5f0c5ec8 | 2489 | |
d3135ba3 | 2490 | return ret; |
2491 | } | |
2492 | ||
128ea8ab | 2493 | /* |
2494 | * Install route entry into the VNI routing table and invoke route selection. | |
2495 | */ | |
d62a17ae | 2496 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2497 | const struct prefix_evpn *p, |
40381db7 | 2498 | struct bgp_path_info *parent_pi) |
d62a17ae | 2499 | { |
9bcb3eef | 2500 | struct bgp_dest *dest; |
40381db7 | 2501 | struct bgp_path_info *pi; |
9c7edc03 | 2502 | struct bgp_path_info *local_pi; |
d62a17ae | 2503 | struct attr *attr_new; |
2504 | int ret; | |
c44ab6f1 AK |
2505 | struct prefix_evpn ad_evp; |
2506 | ||
2507 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2508 | * we need to create a different copy for the VNI | |
2509 | */ | |
2510 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2511 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2512 | parent_pi->attr->nexthop); | |
d62a17ae | 2513 | |
2514 | /* Create (or fetch) route within the VNI. */ | |
2515 | /* NOTE: There is no RD here. */ | |
9bcb3eef | 2516 | dest = bgp_node_get(vpn->route_table, (struct prefix *)p); |
d62a17ae | 2517 | |
2518 | /* Check if route entry is already present. */ | |
9bcb3eef | 2519 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2520 | if (pi->extra |
2521 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2522 | break; |
2523 | ||
bd0254af MS |
2524 | if (!pi) { |
2525 | /* Create an info */ | |
9bcb3eef | 2526 | (void)bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2527 | parent_pi->attr); |
bd0254af | 2528 | } else { |
40381db7 DS |
2529 | if (attrhash_cmp(pi->attr, parent_pi->attr) |
2530 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2531 | bgp_dest_unlock_node(dest); |
d62a17ae | 2532 | return 0; |
2533 | } | |
2534 | /* The attribute has changed. */ | |
2535 | /* Add (or update) attribute to hash. */ | |
40381db7 | 2536 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 2537 | |
50f74cf1 | 2538 | /* Restore route, if needed. */ |
40381db7 | 2539 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2540 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 2541 | |
2542 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2543 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
2544 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 2545 | |
2546 | /* Unintern existing, set to new. */ | |
40381db7 DS |
2547 | bgp_attr_unintern(&pi->attr); |
2548 | pi->attr = attr_new; | |
2549 | pi->uptime = bgp_clock(); | |
50f74cf1 | 2550 | } |
2551 | ||
2552 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2553 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 2554 | |
9c7edc03 AK |
2555 | /* if the best path is a local path with a non-zero ES |
2556 | * sync info against the local path may need to be updated | |
2557 | * when a remote path is added/updated (including changes | |
2558 | * from sync-path to remote-path) | |
2559 | */ | |
2560 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2561 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2562 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2563 | __func__); | |
2564 | ||
9bcb3eef | 2565 | bgp_dest_unlock_node(dest); |
a97a1e11 | 2566 | |
50f74cf1 | 2567 | return ret; |
2568 | } | |
2569 | ||
d3135ba3 | 2570 | /* |
2571 | * Uninstall route entry from the VRF routing table and send message | |
2572 | * to zebra, if appropriate. | |
2573 | */ | |
2574 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2575 | const struct prefix_evpn *evp, |
40381db7 | 2576 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2577 | { |
9bcb3eef | 2578 | struct bgp_dest *dest; |
40381db7 | 2579 | struct bgp_path_info *pi; |
c4edf708 | 2580 | int ret = 0; |
d3135ba3 | 2581 | struct prefix p; |
2582 | struct prefix *pp = &p; | |
2583 | afi_t afi = 0; | |
2584 | safi_t safi = 0; | |
1eb88002 | 2585 | char buf[PREFIX_STRLEN]; |
d3135ba3 | 2586 | |
2587 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2588 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2589 | |
1eb88002 | 2590 | if (bgp_debug_zebra(NULL)) { |
996c9314 | 2591 | zlog_debug( |
5f0c5ec8 | 2592 | "vrf %s: unimport evpn prefix %s parent %p flags 0x%x", |
2593 | vrf_id_to_name(bgp_vrf->vrf_id), | |
996c9314 | 2594 | prefix2str(evp, buf, sizeof(buf)), |
5f0c5ec8 | 2595 | parent_pi, parent_pi->flags); |
1eb88002 MK |
2596 | } |
2597 | ||
d3135ba3 | 2598 | /* Locate route within the VRF. */ |
2599 | /* NOTE: There is no RD here. */ | |
3714a385 | 2600 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2601 | afi = AFI_IP; |
2602 | safi = SAFI_UNICAST; | |
9bcb3eef | 2603 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2604 | } else { |
2605 | afi = AFI_IP6; | |
2606 | safi = SAFI_UNICAST; | |
9bcb3eef | 2607 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2608 | } |
2609 | ||
9bcb3eef | 2610 | if (!dest) |
d3135ba3 | 2611 | return 0; |
2612 | ||
2613 | /* Find matching route entry. */ | |
9bcb3eef | 2614 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2615 | if (pi->extra |
2616 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2617 | break; |
2618 | ||
40381db7 | 2619 | if (!pi) |
d3135ba3 | 2620 | return 0; |
2621 | ||
5f0c5ec8 | 2622 | if (bgp_debug_zebra(NULL)) |
2623 | zlog_debug( | |
9bcb3eef DS |
2624 | "... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
2625 | dest, bgp_dest_to_rnode(dest)->lock, | |
2626 | pi, pi->lock, pi->flags); | |
5f0c5ec8 | 2627 | |
7452e879 | 2628 | /* Process for route leaking. */ |
2629 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
2630 | ||
9bcb3eef | 2631 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2632 | safi); |
4c7a11d5 | 2633 | |
d3135ba3 | 2634 | /* Mark entry for deletion */ |
9bcb3eef | 2635 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 2636 | |
2637 | /* Perform route selection and update zebra, if required. */ | |
9bcb3eef | 2638 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2639 | |
2640 | /* Unlock route node. */ | |
9bcb3eef | 2641 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2642 | |
2643 | return ret; | |
2644 | } | |
2645 | ||
128ea8ab | 2646 | /* |
2647 | * Uninstall route entry from the VNI routing table and send message | |
2648 | * to zebra, if appropriate. | |
2649 | */ | |
d62a17ae | 2650 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 2651 | const struct prefix_evpn *p, |
40381db7 | 2652 | struct bgp_path_info *parent_pi) |
128ea8ab | 2653 | { |
9bcb3eef | 2654 | struct bgp_dest *dest; |
40381db7 | 2655 | struct bgp_path_info *pi; |
9c7edc03 | 2656 | struct bgp_path_info *local_pi; |
d62a17ae | 2657 | int ret; |
c44ab6f1 AK |
2658 | struct prefix_evpn ad_evp; |
2659 | ||
2660 | /* EAD prefix in the global table doesn't include the VTEP-IP so | |
2661 | * we need to create a different copy for the VNI | |
2662 | */ | |
2663 | if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
2664 | p = evpn_type1_prefix_vni_copy(&ad_evp, p, | |
2665 | parent_pi->attr->nexthop); | |
128ea8ab | 2666 | |
d62a17ae | 2667 | /* Locate route within the VNI. */ |
2668 | /* NOTE: There is no RD here. */ | |
9bcb3eef DS |
2669 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)p); |
2670 | if (!dest) | |
d62a17ae | 2671 | return 0; |
128ea8ab | 2672 | |
d62a17ae | 2673 | /* Find matching route entry. */ |
9bcb3eef | 2674 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2675 | if (pi->extra |
2676 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2677 | break; |
128ea8ab | 2678 | |
40381db7 | 2679 | if (!pi) |
d62a17ae | 2680 | return 0; |
128ea8ab | 2681 | |
d62a17ae | 2682 | /* Mark entry for deletion */ |
9bcb3eef | 2683 | bgp_path_info_delete(dest, pi); |
128ea8ab | 2684 | |
d62a17ae | 2685 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2686 | ret = evpn_route_select_install(bgp, vpn, dest); |
128ea8ab | 2687 | |
9c7edc03 AK |
2688 | /* if the best path is a local path with a non-zero ES |
2689 | * sync info against the local path may need to be updated | |
2690 | * when a remote path is deleted | |
2691 | */ | |
2692 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
2693 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
2694 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
2695 | __func__); | |
2696 | ||
d62a17ae | 2697 | /* Unlock route node. */ |
9bcb3eef | 2698 | bgp_dest_unlock_node(dest); |
128ea8ab | 2699 | |
d62a17ae | 2700 | return ret; |
128ea8ab | 2701 | } |
2702 | ||
5ba238b7 MK |
2703 | /* |
2704 | * Given a route entry and a VRF, see if this route entry should be | |
2705 | * imported into the VRF i.e., RTs match. | |
2706 | */ | |
4b7e6066 | 2707 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 2708 | struct bgp_path_info *pi) |
5ba238b7 | 2709 | { |
40381db7 | 2710 | struct attr *attr = pi->attr; |
5ba238b7 MK |
2711 | struct ecommunity *ecom; |
2712 | int i; | |
2713 | ||
2714 | assert(attr); | |
2715 | /* Route should have valid RT to be even considered. */ | |
2716 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2717 | return 0; | |
2718 | ||
2719 | ecom = attr->ecommunity; | |
2720 | if (!ecom || !ecom->size) | |
2721 | return 0; | |
2722 | ||
2723 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2724 | * matches, we're done. | |
2725 | */ | |
2726 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2727 | uint8_t *pnt; |
2728 | uint8_t type, sub_type; | |
5ba238b7 MK |
2729 | struct ecommunity_val *eval; |
2730 | struct ecommunity_val eval_tmp; | |
2731 | struct vrf_irt_node *irt; | |
2732 | ||
2733 | /* Only deal with RTs */ | |
34540b0d | 2734 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 2735 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2736 | + (i * ecom->unit_size)); |
5ba238b7 MK |
2737 | type = *pnt++; |
2738 | sub_type = *pnt++; | |
2739 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2740 | continue; | |
2741 | ||
2742 | /* See if this RT matches specified VNIs import RTs */ | |
2743 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 2744 | if (irt) |
5ba238b7 MK |
2745 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2746 | return 1; | |
2747 | ||
2748 | /* Also check for non-exact match. In this, we mask out the AS | |
2749 | * and | |
2750 | * only check on the local-admin sub-field. This is to | |
2751 | * facilitate using | |
2752 | * VNI as the RT for EBGP peering too. | |
2753 | */ | |
2754 | irt = NULL; | |
2755 | if (type == ECOMMUNITY_ENCODE_AS | |
2756 | || type == ECOMMUNITY_ENCODE_AS4 | |
2757 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2758 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
2759 | mask_ecom_global_admin(&eval_tmp, eval); |
2760 | irt = lookup_vrf_import_rt(&eval_tmp); | |
2761 | } | |
5d9cbca2 | 2762 | if (irt) |
5ba238b7 MK |
2763 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
2764 | return 1; | |
2765 | } | |
2766 | ||
2767 | return 0; | |
2768 | } | |
2769 | ||
128ea8ab | 2770 | /* |
2771 | * Given a route entry and a VNI, see if this route entry should be | |
2772 | * imported into the VNI i.e., RTs match. | |
2773 | */ | |
d62a17ae | 2774 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 2775 | struct bgp_path_info *pi) |
d62a17ae | 2776 | { |
40381db7 | 2777 | struct attr *attr = pi->attr; |
d62a17ae | 2778 | struct ecommunity *ecom; |
2779 | int i; | |
2780 | ||
2781 | assert(attr); | |
2782 | /* Route should have valid RT to be even considered. */ | |
2783 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
2784 | return 0; | |
2785 | ||
2786 | ecom = attr->ecommunity; | |
2787 | if (!ecom || !ecom->size) | |
2788 | return 0; | |
2789 | ||
2790 | /* For each extended community RT, see if it matches this VNI. If any RT | |
2791 | * matches, we're done. | |
2792 | */ | |
2793 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
2794 | uint8_t *pnt; |
2795 | uint8_t type, sub_type; | |
d62a17ae | 2796 | struct ecommunity_val *eval; |
2797 | struct ecommunity_val eval_tmp; | |
2798 | struct irt_node *irt; | |
2799 | ||
2800 | /* Only deal with RTs */ | |
34540b0d | 2801 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 2802 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 2803 | + (i * ecom->unit_size)); |
d62a17ae | 2804 | type = *pnt++; |
2805 | sub_type = *pnt++; | |
2806 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
2807 | continue; | |
2808 | ||
2809 | /* See if this RT matches specified VNIs import RTs */ | |
2810 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 2811 | if (irt) |
d62a17ae | 2812 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2813 | return 1; | |
2814 | ||
2815 | /* Also check for non-exact match. In this, we mask out the AS | |
2816 | * and | |
2817 | * only check on the local-admin sub-field. This is to | |
2818 | * facilitate using | |
2819 | * VNI as the RT for EBGP peering too. | |
2820 | */ | |
2821 | irt = NULL; | |
2822 | if (type == ECOMMUNITY_ENCODE_AS | |
2823 | || type == ECOMMUNITY_ENCODE_AS4 | |
2824 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 2825 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 2826 | mask_ecom_global_admin(&eval_tmp, eval); |
2827 | irt = lookup_import_rt(bgp, &eval_tmp); | |
2828 | } | |
b1ab0dfe | 2829 | if (irt) |
d62a17ae | 2830 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
2831 | return 1; | |
2832 | } | |
2833 | ||
2834 | return 0; | |
128ea8ab | 2835 | } |
2836 | ||
47bf0432 CS |
2837 | /* This API will scan evpn routes for checking attribute's rmac |
2838 | * macthes with bgp instance router mac. It avoid installing | |
2839 | * route into bgp vrf table and remote rmac in bridge table. | |
2840 | */ | |
2841 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 2842 | const struct prefix_evpn *evp, |
47bf0432 CS |
2843 | struct bgp_path_info *pi) |
2844 | { | |
2845 | /* evpn route could have learnt prior to L3vni has come up, | |
2846 | * perform rmac check before installing route and | |
2847 | * remote router mac. | |
2848 | * The route will be removed from global bgp table once | |
2849 | * SVI comes up with MAC and stored in hash, triggers | |
2850 | * bgp_mac_rescan_all_evpn_tables. | |
2851 | */ | |
05864da7 | 2852 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 CS |
2853 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
2854 | char buf1[PREFIX_STRLEN]; | |
2855 | char attr_str[BUFSIZ] = {0}; | |
2856 | ||
5022c833 | 2857 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 CS |
2858 | |
2859 | zlog_debug("%s: bgp %u prefix %s with attr %s - DENIED due to self mac", | |
2860 | __func__, bgp_vrf->vrf_id, | |
2861 | prefix2str(evp, buf1, sizeof(buf1)), | |
2862 | attr_str); | |
2863 | } | |
2864 | ||
2865 | return 1; | |
2866 | } | |
2867 | ||
2868 | return 0; | |
2869 | } | |
2870 | ||
5ba238b7 MK |
2871 | /* |
2872 | * Install or uninstall mac-ip routes are appropriate for this | |
2873 | * particular VRF. | |
2874 | */ | |
996c9314 | 2875 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
2876 | { |
2877 | afi_t afi; | |
2878 | safi_t safi; | |
9bcb3eef | 2879 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 2880 | struct bgp_table *table; |
40381db7 | 2881 | struct bgp_path_info *pi; |
5ba238b7 MK |
2882 | int ret; |
2883 | char buf[PREFIX_STRLEN]; | |
5e53dce3 | 2884 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
2885 | |
2886 | afi = AFI_L2VPN; | |
2887 | safi = SAFI_EVPN; | |
5e53dce3 T |
2888 | bgp_evpn = bgp_get_evpn(); |
2889 | if (!bgp_evpn) | |
5ba238b7 MK |
2890 | return -1; |
2891 | ||
2892 | /* Walk entire global routing table and evaluate routes which could be | |
2893 | * imported into this VRF. Note that we need to loop through all global | |
2894 | * routes to determine which route matches the import rt on vrf | |
2895 | */ | |
9bcb3eef DS |
2896 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
2897 | rd_dest = bgp_route_next(rd_dest)) { | |
2898 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
2899 | if (!table) |
2900 | continue; | |
2901 | ||
9bcb3eef DS |
2902 | for (dest = bgp_table_top(table); dest; |
2903 | dest = bgp_route_next(dest)) { | |
2904 | const struct prefix_evpn *evp = | |
2905 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2906 | dest); | |
5ba238b7 | 2907 | |
1eb88002 | 2908 | /* if not mac-ip route skip this route */ |
996c9314 LB |
2909 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
2910 | || evp->prefix.route_type | |
2911 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
2912 | continue; |
2913 | ||
1eb88002 | 2914 | /* if not a mac+ip route skip this route */ |
3714a385 | 2915 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
2916 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
2917 | continue; |
2918 | ||
9bcb3eef | 2919 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 2920 | pi = pi->next) { |
5ba238b7 | 2921 | /* Consider "valid" remote routes applicable for |
523cafc4 | 2922 | * this VRF. |
2923 | */ | |
40381db7 DS |
2924 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
2925 | && pi->type == ZEBRA_ROUTE_BGP | |
2926 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
5ba238b7 MK |
2927 | continue; |
2928 | ||
40381db7 | 2929 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
47bf0432 CS |
2930 | if (bgp_evpn_route_rmac_self_check( |
2931 | bgp_vrf, evp, pi)) | |
2932 | continue; | |
2933 | ||
5ba238b7 | 2934 | if (install) |
996c9314 | 2935 | ret = install_evpn_route_entry_in_vrf( |
40381db7 | 2936 | bgp_vrf, evp, pi); |
5ba238b7 | 2937 | else |
996c9314 | 2938 | ret = uninstall_evpn_route_entry_in_vrf( |
40381db7 | 2939 | bgp_vrf, evp, pi); |
5ba238b7 MK |
2940 | |
2941 | if (ret) { | |
af4c2728 | 2942 | flog_err( |
e50f7cfd | 2943 | EC_BGP_EVPN_FAIL, |
5ba238b7 MK |
2944 | "Failed to %s EVPN %s route in VRF %s", |
2945 | install ? "install" | |
2946 | : "uninstall", | |
2947 | prefix2str(evp, buf, | |
2948 | sizeof(buf)), | |
996c9314 LB |
2949 | vrf_id_to_name( |
2950 | bgp_vrf->vrf_id)); | |
5ba238b7 MK |
2951 | return ret; |
2952 | } | |
2953 | } | |
2954 | } | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | return 0; | |
2959 | } | |
2960 | ||
128ea8ab | 2961 | /* |
2962 | * Install or uninstall routes of specified type that are appropriate for this | |
2963 | * particular VNI. | |
2964 | */ | |
d62a17ae | 2965 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
2966 | struct bgpevpn *vpn, | |
2967 | bgp_evpn_route_type rtype, | |
2968 | int install) | |
2969 | { | |
0291c246 MK |
2970 | afi_t afi; |
2971 | safi_t safi; | |
9bcb3eef | 2972 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 2973 | struct bgp_table *table; |
40381db7 | 2974 | struct bgp_path_info *pi; |
0291c246 | 2975 | int ret; |
d62a17ae | 2976 | |
2977 | afi = AFI_L2VPN; | |
2978 | safi = SAFI_EVPN; | |
2979 | ||
2980 | /* Walk entire global routing table and evaluate routes which could be | |
2981 | * imported into this VPN. Note that we cannot just look at the routes | |
2982 | * for | |
2983 | * the VNI's RD - remote routes applicable for this VNI could have any | |
2984 | * RD. | |
2985 | */ | |
2986 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
2987 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
2988 | rd_dest = bgp_route_next(rd_dest)) { | |
2989 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 2990 | if (!table) |
2991 | continue; | |
2992 | ||
9bcb3eef DS |
2993 | for (dest = bgp_table_top(table); dest; |
2994 | dest = bgp_route_next(dest)) { | |
b54892e0 | 2995 | const struct prefix_evpn *evp = |
9bcb3eef DS |
2996 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
2997 | dest); | |
d62a17ae | 2998 | |
2999 | if (evp->prefix.route_type != rtype) | |
3000 | continue; | |
3001 | ||
9bcb3eef | 3002 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3003 | pi = pi->next) { |
d62a17ae | 3004 | /* Consider "valid" remote routes applicable for |
3005 | * this VNI. */ | |
40381db7 DS |
3006 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3007 | && pi->type == ZEBRA_ROUTE_BGP | |
3008 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3009 | continue; |
3010 | ||
40381db7 | 3011 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3012 | if (install) |
3013 | ret = install_evpn_route_entry( | |
40381db7 | 3014 | bgp, vpn, evp, pi); |
d62a17ae | 3015 | else |
3016 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3017 | bgp, vpn, evp, pi); |
d62a17ae | 3018 | |
3019 | if (ret) { | |
af4c2728 | 3020 | flog_err( |
e50f7cfd | 3021 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3022 | "%u: Failed to %s EVPN %s route in VNI %u", |
3023 | bgp->vrf_id, | |
3024 | install ? "install" | |
3025 | : "uninstall", | |
3026 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3027 | ? "MACIP" | |
3028 | : "IMET", | |
3029 | vpn->vni); | |
3030 | return ret; | |
3031 | } | |
3032 | } | |
3033 | } | |
3034 | } | |
3035 | } | |
3036 | ||
3037 | return 0; | |
128ea8ab | 3038 | } |
3039 | ||
5ba238b7 | 3040 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3041 | * is invoked upon l3vni-add or l3vni import rt change |
3042 | */ | |
5ba238b7 MK |
3043 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3044 | { | |
3045 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3046 | return 0; | |
3047 | } | |
3048 | ||
128ea8ab | 3049 | /* |
3050 | * Install any existing remote routes applicable for this VNI into its | |
3051 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3052 | * RT is changed. | |
3053 | */ | |
d62a17ae | 3054 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3055 | { |
d62a17ae | 3056 | int ret; |
128ea8ab | 3057 | |
d62a17ae | 3058 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3059 | * for this VNI. | |
3060 | */ | |
3061 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3062 | 1); | |
3063 | if (ret) | |
3064 | return ret; | |
128ea8ab | 3065 | |
c44ab6f1 AK |
3066 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3067 | 1); | |
3068 | if (ret) | |
3069 | return ret; | |
3070 | ||
d62a17ae | 3071 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3072 | 1); | |
128ea8ab | 3073 | } |
3074 | ||
5ba238b7 MK |
3075 | /* uninstall routes from l3vni vrf. */ |
3076 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3077 | { | |
3078 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3079 | return 0; | |
3080 | } | |
3081 | ||
90e60aa7 | 3082 | /* |
3083 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3084 | * this is invoked is upon an import RT change. | |
3085 | */ | |
d62a17ae | 3086 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3087 | { |
d62a17ae | 3088 | int ret; |
90e60aa7 | 3089 | |
d62a17ae | 3090 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3091 | * applicable | |
3092 | * for this VNI. | |
3093 | */ | |
3094 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3095 | 0); | |
3096 | if (ret) | |
3097 | return ret; | |
90e60aa7 | 3098 | |
c44ab6f1 AK |
3099 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3100 | 1); | |
3101 | if (ret) | |
3102 | return ret; | |
3103 | ||
3104 | ||
d62a17ae | 3105 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3106 | 0); | |
90e60aa7 | 3107 | } |
3108 | ||
d3135ba3 | 3109 | /* |
3110 | * Install or uninstall route in matching VRFs (list). | |
3111 | */ | |
3112 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3113 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3114 | struct bgp_path_info *pi, |
d3135ba3 | 3115 | struct list *vrfs, int install) |
3116 | { | |
3117 | char buf[PREFIX2STR_BUFFER]; | |
3118 | struct bgp *bgp_vrf; | |
3119 | struct listnode *node, *nnode; | |
3120 | ||
90264d64 | 3121 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3122 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3123 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3124 | return 0; |
3125 | ||
90264d64 | 3126 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3127 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3128 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3129 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3130 | return 0; |
3131 | ||
d3135ba3 | 3132 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3133 | int ret; | |
3134 | ||
3135 | if (install) | |
40381db7 | 3136 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3137 | else |
996c9314 | 3138 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3139 | pi); |
d3135ba3 | 3140 | |
3141 | if (ret) { | |
e50f7cfd | 3142 | flog_err(EC_BGP_EVPN_FAIL, |
1c50c1c0 QY |
3143 | "%u: Failed to %s prefix %s in VRF %s", |
3144 | bgp_def->vrf_id, | |
3145 | install ? "install" : "uninstall", | |
3146 | prefix2str(evp, buf, sizeof(buf)), | |
3147 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
d3135ba3 | 3148 | return ret; |
3149 | } | |
3150 | } | |
3151 | ||
3152 | return 0; | |
3153 | } | |
3154 | ||
128ea8ab | 3155 | /* |
3156 | * Install or uninstall route in matching VNIs (list). | |
3157 | */ | |
d62a17ae | 3158 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3159 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3160 | struct bgp_path_info *pi, |
d62a17ae | 3161 | struct list *vnis, int install) |
128ea8ab | 3162 | { |
d62a17ae | 3163 | struct bgpevpn *vpn; |
3164 | struct listnode *node, *nnode; | |
128ea8ab | 3165 | |
d62a17ae | 3166 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3167 | int ret; | |
128ea8ab | 3168 | |
d62a17ae | 3169 | if (!is_vni_live(vpn)) |
3170 | continue; | |
128ea8ab | 3171 | |
d62a17ae | 3172 | if (install) |
40381db7 | 3173 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3174 | else |
40381db7 | 3175 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3176 | |
d62a17ae | 3177 | if (ret) { |
1c50c1c0 QY |
3178 | flog_err(EC_BGP_EVPN_FAIL, |
3179 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3180 | bgp->vrf_id, install ? "install" : "uninstall", | |
3181 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3182 | ? "MACIP" | |
3183 | : "IMET", | |
3184 | vpn->vni); | |
d62a17ae | 3185 | return ret; |
3186 | } | |
3187 | } | |
128ea8ab | 3188 | |
d62a17ae | 3189 | return 0; |
128ea8ab | 3190 | } |
3191 | ||
3192 | /* | |
50f74cf1 | 3193 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3194 | */ |
d62a17ae | 3195 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 3196 | const struct prefix *p, |
40381db7 | 3197 | struct bgp_path_info *pi, int import) |
d62a17ae | 3198 | { |
3199 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3200 | struct attr *attr = pi->attr; |
d62a17ae | 3201 | struct ecommunity *ecom; |
3202 | int i; | |
c44ab6f1 | 3203 | struct prefix_evpn ad_evp; |
d62a17ae | 3204 | |
3205 | assert(attr); | |
3206 | ||
50f74cf1 | 3207 | /* Only type-2, type-3, type-4 and type-5 are supported currently */ |
d62a17ae | 3208 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3209 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3210 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3211 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3212 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3213 | return 0; |
3214 | ||
3215 | /* If we don't have Route Target, nothing much to do. */ | |
3216 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3217 | return 0; | |
3218 | ||
c44ab6f1 AK |
3219 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3220 | * we need to create a different copy for the VNI | |
3221 | */ | |
3222 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
3223 | evp = evpn_type1_prefix_vni_copy(&ad_evp, evp, attr->nexthop); | |
3224 | ||
d62a17ae | 3225 | ecom = attr->ecommunity; |
3226 | if (!ecom || !ecom->size) | |
3227 | return -1; | |
3228 | ||
50f74cf1 | 3229 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3230 | * attached to the route */ | |
d62a17ae | 3231 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3232 | uint8_t *pnt; |
3233 | uint8_t type, sub_type; | |
d62a17ae | 3234 | struct ecommunity_val *eval; |
3235 | struct ecommunity_val eval_tmp; | |
996c9314 | 3236 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3237 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3238 | struct bgp_evpn_es *es; |
d62a17ae | 3239 | |
3240 | /* Only deal with RTs */ | |
34540b0d | 3241 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3242 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3243 | + (i * ecom->unit_size)); |
d62a17ae | 3244 | type = *pnt++; |
3245 | sub_type = *pnt++; | |
3246 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3247 | continue; | |
3248 | ||
50f74cf1 | 3249 | /* |
3250 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3251 | * IMET route is imported into VNI table. | |
3252 | * prefix routes are imported into VRF table. | |
523cafc4 | 3253 | */ |
50f74cf1 | 3254 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3255 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3256 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3257 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3258 | |
50f74cf1 | 3259 | irt = lookup_import_rt(bgp, eval); |
3260 | if (irt) | |
40381db7 DS |
3261 | install_uninstall_route_in_vnis( |
3262 | bgp, afi, safi, evp, pi, irt->vnis, | |
3263 | import); | |
50f74cf1 | 3264 | |
3265 | vrf_irt = lookup_vrf_import_rt(eval); | |
3266 | if (vrf_irt) | |
40381db7 DS |
3267 | install_uninstall_route_in_vrfs( |
3268 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3269 | import); | |
50f74cf1 | 3270 | |
3271 | /* Also check for non-exact match. | |
3272 | * In this, we mask out the AS and | |
3273 | * only check on the local-admin sub-field. | |
3274 | * This is to facilitate using | |
3275 | * VNI as the RT for EBGP peering too. | |
3276 | */ | |
3277 | irt = NULL; | |
3278 | vrf_irt = NULL; | |
3279 | if (type == ECOMMUNITY_ENCODE_AS | |
3280 | || type == ECOMMUNITY_ENCODE_AS4 | |
3281 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3282 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 3283 | mask_ecom_global_admin(&eval_tmp, eval); |
3284 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3285 | vrf_irt = lookup_vrf_import_rt(&eval_tmp); | |
3286 | } | |
3287 | ||
3288 | if (irt) | |
40381db7 DS |
3289 | install_uninstall_route_in_vnis( |
3290 | bgp, afi, safi, evp, pi, irt->vnis, | |
3291 | import); | |
50f74cf1 | 3292 | if (vrf_irt) |
40381db7 DS |
3293 | install_uninstall_route_in_vrfs( |
3294 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3295 | import); | |
50f74cf1 | 3296 | } |
3297 | ||
3298 | /* es route is imported into the es table */ | |
3299 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
3300 | ||
3301 | /* we will match based on the entire esi to avoid | |
3302 | * imoort of an es route for esi2 into esi1 | |
3303 | */ | |
c44ab6f1 | 3304 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 3305 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 3306 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 3307 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 3308 | } |
d62a17ae | 3309 | } |
3310 | ||
3311 | return 0; | |
128ea8ab | 3312 | } |
3313 | ||
2bb9eff4 DS |
3314 | /* |
3315 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
3316 | * routes | |
3317 | */ | |
80b140af MK |
3318 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
3319 | { | |
5fd9c12b KA |
3320 | /* Delete ipv4 default route and withdraw from peers */ |
3321 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3322 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3323 | SAFI_UNICAST, false); | |
3324 | ||
80b140af | 3325 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
3326 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3327 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3328 | |
5fd9c12b KA |
3329 | /* Delete ipv6 default route and withdraw from peers */ |
3330 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3331 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3332 | SAFI_UNICAST, false); | |
3333 | ||
80b140af | 3334 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
3335 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3336 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
3337 | } |
3338 | ||
2bb9eff4 DS |
3339 | /* |
3340 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
3341 | * routes | |
3342 | */ | |
5394a276 | 3343 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 3344 | { |
5394a276 CS |
3345 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
3346 | ||
3347 | bgp_evpn = bgp_get_evpn(); | |
3348 | if (!bgp_evpn) | |
3349 | return; | |
3350 | ||
80b140af | 3351 | /* update all ipv4 routes */ |
fdf19f06 MK |
3352 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
3353 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 3354 | |
5fd9c12b KA |
3355 | /* update ipv4 default route and withdraw from peers */ |
3356 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
3357 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
3358 | SAFI_UNICAST, true); | |
3359 | ||
80b140af | 3360 | /* update all ipv6 routes */ |
fdf19f06 MK |
3361 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
3362 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
3363 | |
3364 | /* update ipv6 default route and withdraw from peers */ | |
3365 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
3366 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
3367 | SAFI_UNICAST, true); | |
3368 | ||
80b140af MK |
3369 | } |
3370 | ||
676f83b9 | 3371 | /* |
3372 | * update and advertise local routes for a VRF as type-5 routes. | |
3373 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
3374 | * done in the global route table using the routes which already exist in the | |
3375 | * VRF routing table | |
3376 | */ | |
80b140af | 3377 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3378 | { |
80b140af MK |
3379 | /* skip if the RD is configured */ |
3380 | if (is_vrf_rd_configured(bgp_vrf)) | |
3381 | return; | |
3382 | ||
3383 | /* derive the RD for the VRF based on new router-id */ | |
3384 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
3385 | ||
3386 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
3387 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 3388 | } |
3389 | ||
3390 | /* | |
3391 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
3392 | * This is invoked upon VRF RD change. The processing is done only from global | |
3393 | * table. | |
3394 | */ | |
80b140af | 3395 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 3396 | { |
80b140af MK |
3397 | /* skip if the RD is configured */ |
3398 | if (is_vrf_rd_configured(bgp_vrf)) | |
3399 | return; | |
3400 | ||
3401 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
3402 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 3403 | } |
3404 | ||
90e60aa7 | 3405 | /* |
3406 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
3407 | * change. Note that the processing is done only on the global route table | |
3408 | * using routes that already exist in the per-VNI table. | |
3409 | */ | |
d62a17ae | 3410 | static int update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
3411 | { | |
3412 | struct prefix_evpn p; | |
9bcb3eef | 3413 | struct bgp_dest *dest, *global_dest; |
40381db7 | 3414 | struct bgp_path_info *pi, *global_pi; |
d62a17ae | 3415 | struct attr *attr; |
3416 | afi_t afi = AFI_L2VPN; | |
3417 | safi_t safi = SAFI_EVPN; | |
3418 | ||
3419 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
3420 | * attributes to create and advertise the type-3 route for this VNI | |
3421 | * in the global table. | |
fd069644 DS |
3422 | * |
3423 | * RT-3 only if doing head-end replication | |
d62a17ae | 3424 | */ |
833b8a50 AK |
3425 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
3426 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 3427 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
9bcb3eef DS |
3428 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
3429 | if (!dest) /* unexpected */ | |
fd069644 | 3430 | return 0; |
9bcb3eef | 3431 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
3432 | if (pi->peer == bgp->peer_self && |
3433 | pi->type == ZEBRA_ROUTE_BGP | |
3434 | && pi->sub_type == BGP_ROUTE_STATIC) | |
3435 | break; | |
3436 | if (!pi) /* unexpected */ | |
3437 | return 0; | |
3438 | attr = pi->attr; | |
d62a17ae | 3439 | |
9c7edc03 AK |
3440 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], |
3441 | afi, safi, &p, &vpn->prd); | |
9bcb3eef | 3442 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, |
9c7edc03 AK |
3443 | 1, &pi, 0, mac_mobility_seqnum(attr), |
3444 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3445 | |
fd069644 | 3446 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
3447 | bgp_process(bgp, global_dest, afi, safi); |
3448 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 3449 | } |
d62a17ae | 3450 | |
3451 | /* Now, walk this VNI's route table and use the route and its attribute | |
3452 | * to create and schedule route in global table. | |
3453 | */ | |
9bcb3eef DS |
3454 | for (dest = bgp_table_top(vpn->route_table); dest; |
3455 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3456 | const struct prefix_evpn *evp = |
9bcb3eef | 3457 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
d62a17ae | 3458 | |
3459 | /* Identify MAC-IP local routes. */ | |
3460 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3461 | continue; | |
3462 | ||
9bcb3eef | 3463 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3464 | if (pi->peer == bgp->peer_self |
3465 | && pi->type == ZEBRA_ROUTE_BGP | |
3466 | && pi->sub_type == BGP_ROUTE_STATIC) | |
d62a17ae | 3467 | break; |
40381db7 | 3468 | if (!pi) |
d62a17ae | 3469 | continue; |
3470 | ||
3471 | /* Create route in global routing table using this route entry's | |
3472 | * attribute. | |
3473 | */ | |
40381db7 | 3474 | attr = pi->attr; |
c44ab6f1 | 3475 | global_dest = bgp_global_evpn_node_get(bgp->rib[afi][safi], afi, safi, |
9c7edc03 | 3476 | evp, &vpn->prd); |
9bcb3eef | 3477 | assert(global_dest); |
9c7edc03 AK |
3478 | update_evpn_route_entry(bgp, vpn, afi, safi, global_dest, attr, 1, |
3479 | &global_pi, 0, | |
3480 | mac_mobility_seqnum(attr), | |
3481 | false /* setup_sync */, NULL /* old_is_sync */); | |
d62a17ae | 3482 | |
3483 | /* Schedule for processing and unlock node. */ | |
9bcb3eef DS |
3484 | bgp_process(bgp, global_dest, afi, safi); |
3485 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3486 | } |
3487 | ||
3488 | return 0; | |
90e60aa7 | 3489 | } |
3490 | ||
3491 | /* | |
3492 | * Delete (and withdraw) local routes for a VNI - only from the global | |
3493 | * table. Invoked upon router-id change. | |
3494 | */ | |
d62a17ae | 3495 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3496 | { |
d62a17ae | 3497 | int ret; |
3498 | struct prefix_evpn p; | |
9bcb3eef | 3499 | struct bgp_dest *global_dest; |
40381db7 | 3500 | struct bgp_path_info *pi; |
d62a17ae | 3501 | afi_t afi = AFI_L2VPN; |
3502 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 3503 | |
d62a17ae | 3504 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
3505 | * for this VNI - from the global table. | |
3506 | */ | |
3507 | ret = delete_global_type2_routes(bgp, vpn); | |
3508 | if (ret) | |
3509 | return ret; | |
90e60aa7 | 3510 | |
d62a17ae | 3511 | /* Remove type-3 route for this VNI from global table. */ |
3512 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 AK |
3513 | global_dest = bgp_global_evpn_node_lookup(bgp->rib[afi][safi], afi, safi, |
3514 | (const struct prefix_evpn *)&p, &vpn->prd); | |
9bcb3eef | 3515 | if (global_dest) { |
d62a17ae | 3516 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 3517 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 3518 | |
d62a17ae | 3519 | /* Schedule for processing - withdraws to peers happen from |
3520 | * this table. | |
3521 | */ | |
40381db7 | 3522 | if (pi) |
9bcb3eef DS |
3523 | bgp_process(bgp, global_dest, afi, safi); |
3524 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 3525 | } |
90e60aa7 | 3526 | |
d62a17ae | 3527 | return 0; |
90e60aa7 | 3528 | } |
3529 | ||
2d48ee25 | 3530 | /* |
3531 | * Handle router-id change. Update and advertise local routes corresponding | |
3532 | * to this VNI from peers. Note that this is invoked after updating the | |
3533 | * router-id. The routes in the per-VNI table are used to create routes in | |
3534 | * the global table and schedule them. | |
3535 | */ | |
e3b78da8 | 3536 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3537 | { |
e3b78da8 | 3538 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3539 | |
d62a17ae | 3540 | /* Skip VNIs with configured RD. */ |
3541 | if (is_rd_configured(vpn)) | |
3542 | return; | |
2d48ee25 | 3543 | |
d62a17ae | 3544 | bgp_evpn_derive_auto_rd(bgp, vpn); |
3545 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 3546 | } |
3547 | ||
3548 | /* | |
3549 | * Handle router-id change. Delete and withdraw local routes corresponding | |
3550 | * to this VNI from peers. Note that this is invoked prior to updating | |
3551 | * the router-id and is done only on the global route table, the routes | |
3552 | * are needed in the per-VNI table to re-advertise with new router id. | |
3553 | */ | |
e3b78da8 | 3554 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 3555 | { |
e3b78da8 | 3556 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 3557 | |
d62a17ae | 3558 | /* Skip VNIs with configured RD. */ |
3559 | if (is_rd_configured(vpn)) | |
3560 | return; | |
2d48ee25 | 3561 | |
d62a17ae | 3562 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 3563 | } |
3564 | ||
fd069644 DS |
3565 | /* |
3566 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
3567 | * This is invoked upon flooding mode changing to head-end replication. | |
3568 | */ | |
e3b78da8 | 3569 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3570 | { |
e3b78da8 | 3571 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3572 | struct bgp *bgp = data; |
3573 | struct prefix_evpn p; | |
3574 | ||
833b8a50 AK |
3575 | if (!vpn || !is_vni_live(vpn) || |
3576 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
3577 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
3578 | return; |
3579 | ||
3580 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 3581 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
3582 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
3583 | "Type3 route creation failure for VNI %u", vpn->vni); | |
3584 | } | |
3585 | ||
3586 | /* | |
3587 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
3588 | * This is invoked upon flooding mode changing to drop BUM packets. | |
3589 | */ | |
e3b78da8 | 3590 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 3591 | { |
e3b78da8 | 3592 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
3593 | struct bgp *bgp = data; |
3594 | struct prefix_evpn p; | |
3595 | ||
3596 | if (!vpn || !is_vni_live(vpn)) | |
3597 | return; | |
3598 | ||
3599 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
3600 | delete_evpn_route(bgp, vpn, &p); | |
3601 | } | |
3602 | ||
128ea8ab | 3603 | /* |
3604 | * Process received EVPN type-2 route (advertise or withdraw). | |
3605 | */ | |
d62a17ae | 3606 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3607 | struct attr *attr, uint8_t *pfx, int psize, |
3608 | uint32_t addpath_id) | |
d62a17ae | 3609 | { |
3610 | struct prefix_rd prd; | |
e121d831 QY |
3611 | struct prefix_evpn p = {}; |
3612 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
3613 | uint8_t ipaddr_len; |
3614 | uint8_t macaddr_len; | |
e121d831 QY |
3615 | /* holds the VNI(s) as in packet */ |
3616 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 3617 | uint32_t num_labels = 0; |
554cd77a | 3618 | uint32_t eth_tag; |
d62a17ae | 3619 | int ret; |
3620 | ||
3621 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
3622 | * additional 3 bytes if there is a second label (VNI): | |
3623 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
3624 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
3625 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
3626 | */ | |
3627 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
3628 | && psize != 40 && psize != 52) { | |
e50f7cfd | 3629 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3630 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
3631 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3632 | return -1; |
3633 | } | |
3634 | ||
e121d831 QY |
3635 | struct stream *pkt = stream_new(psize); |
3636 | stream_put(pkt, pfx, psize); | |
554cd77a | 3637 | |
d62a17ae | 3638 | /* Make prefix_rd */ |
3639 | prd.family = AF_UNSPEC; | |
3640 | prd.prefixlen = 64; | |
e121d831 QY |
3641 | |
3642 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 3643 | |
3644 | /* Make EVPN prefix. */ | |
b03b8898 | 3645 | p.family = AF_EVPN; |
50f74cf1 | 3646 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3647 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
3648 | ||
554cd77a | 3649 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 3650 | if (attr) { |
e121d831 QY |
3651 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
3652 | ||
9c7edc03 AK |
3653 | if (bgp_evpn_is_esi_local(&attr->esi)) |
3654 | attr->es_flags |= ATTR_ES_IS_LOCAL; | |
3655 | else | |
3656 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
3657 | } else { |
3658 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 3659 | } |
d62a17ae | 3660 | |
554cd77a | 3661 | /* Copy Ethernet Tag */ |
e121d831 | 3662 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 3663 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3664 | |
3665 | /* Get the MAC Addr len */ | |
e121d831 | 3666 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 3667 | |
3668 | /* Get the MAC Addr */ | |
28328ea9 | 3669 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 3670 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 3671 | } else { |
af4c2728 | 3672 | flog_err( |
e50f7cfd | 3673 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3674 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
3675 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 3676 | goto fail; |
d62a17ae | 3677 | } |
3678 | ||
3679 | ||
3680 | /* Get the IP. */ | |
e121d831 QY |
3681 | STREAM_GETC(pkt, ipaddr_len); |
3682 | ||
d62a17ae | 3683 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
3684 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 3685 | flog_err( |
e50f7cfd | 3686 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3687 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
3688 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 3689 | goto fail; |
d62a17ae | 3690 | } |
3691 | ||
3692 | if (ipaddr_len) { | |
3693 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 3694 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 3695 | ? IPADDR_V4 |
3696 | : IPADDR_V6; | |
e121d831 | 3697 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 3698 | } |
d62a17ae | 3699 | |
b57ba6d2 | 3700 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 3701 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3702 | num_labels++; |
e121d831 | 3703 | |
b57ba6d2 | 3704 | /* Do we have a second VNI? */ |
e121d831 | 3705 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 3706 | num_labels++; |
e121d831 | 3707 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 3708 | } |
d62a17ae | 3709 | |
3710 | /* Process the route. */ | |
3711 | if (attr) | |
3712 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3713 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3714 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 3715 | else |
3716 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3717 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 3718 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
3719 | goto done; |
3720 | ||
3721 | fail: | |
3722 | stream_failure: | |
3723 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
3724 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
3725 | peer->bgp->vrf_id, peer->host); | |
3726 | ret = -1; | |
3727 | done: | |
3728 | stream_free(pkt); | |
d62a17ae | 3729 | return ret; |
128ea8ab | 3730 | } |
3731 | ||
3732 | /* | |
3733 | * Process received EVPN type-3 route (advertise or withdraw). | |
3734 | */ | |
d62a17ae | 3735 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
3736 | struct attr *attr, uint8_t *pfx, int psize, |
3737 | uint32_t addpath_id) | |
d62a17ae | 3738 | { |
3739 | struct prefix_rd prd; | |
3740 | struct prefix_evpn p; | |
d7c0a89a | 3741 | uint8_t ipaddr_len; |
554cd77a | 3742 | uint32_t eth_tag; |
d62a17ae | 3743 | int ret; |
3744 | ||
3745 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
3746 | * IP len (1) and IP (4 or 16). | |
3747 | */ | |
3748 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 3749 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3750 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
3751 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3752 | return -1; |
3753 | } | |
3754 | ||
7fd077aa | 3755 | /* If PMSI is present, log if it is anything other than IR. |
3756 | * Note: We just simply ignore the values as it is not clear if | |
3757 | * doing anything else is better. | |
3758 | */ | |
3759 | if (attr && | |
3760 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
b16dd019 AK |
3761 | if (attr->pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL && |
3762 | attr->pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
3763 | flog_warn(EC_BGP_EVPN_PMSI_PRESENT, | |
3764 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
3765 | peer->bgp->vrf_id, peer->host, | |
3766 | attr->pmsi_tnl_type); | |
7fd077aa | 3767 | } |
3768 | } | |
3769 | ||
d62a17ae | 3770 | /* Make prefix_rd */ |
3771 | prd.family = AF_UNSPEC; | |
3772 | prd.prefixlen = 64; | |
3773 | memcpy(&prd.val, pfx, 8); | |
3774 | pfx += 8; | |
3775 | ||
3776 | /* Make EVPN prefix. */ | |
3777 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3778 | p.family = AF_EVPN; |
50f74cf1 | 3779 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3780 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
3781 | ||
554cd77a VB |
3782 | /* Copy Ethernet Tag */ |
3783 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3784 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3785 | pfx += 4; |
3786 | ||
3787 | /* Get the IP. */ | |
3788 | ipaddr_len = *pfx++; | |
3789 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 3790 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
3791 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 3792 | } else { |
af4c2728 | 3793 | flog_err( |
e50f7cfd | 3794 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3795 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
3796 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
3797 | return -1; | |
3798 | } | |
3799 | ||
3800 | /* Process the route. */ | |
3801 | if (attr) | |
3802 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
3803 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3804 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 3805 | else |
3806 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3807 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3808 | &prd, NULL, 0, NULL); |
d62a17ae | 3809 | return ret; |
128ea8ab | 3810 | } |
3811 | ||
3812 | /* | |
3813 | * Process received EVPN type-5 route (advertise or withdraw). | |
3814 | */ | |
d62a17ae | 3815 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 3816 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 3817 | uint32_t addpath_id) |
d62a17ae | 3818 | { |
3819 | struct prefix_rd prd; | |
3820 | struct prefix_evpn p; | |
3821 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
3822 | uint8_t ippfx_len; |
3823 | uint32_t eth_tag; | |
b57ba6d2 | 3824 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 3825 | int ret; |
c6ec0c74 KA |
3826 | afi_t gw_afi; |
3827 | bool is_valid_update = false; | |
d62a17ae | 3828 | |
3829 | /* Type-5 route should be 34 or 58 bytes: | |
3830 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
3831 | * GW (4 or 16) and VNI (3). | |
3832 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
3833 | */ | |
3834 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 3835 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
3836 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
3837 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 3838 | return -1; |
3839 | } | |
3840 | ||
3841 | /* Make prefix_rd */ | |
3842 | prd.family = AF_UNSPEC; | |
3843 | prd.prefixlen = 64; | |
3844 | memcpy(&prd.val, pfx, 8); | |
3845 | pfx += 8; | |
3846 | ||
3847 | /* Make EVPN prefix. */ | |
3848 | memset(&p, 0, sizeof(struct prefix_evpn)); | |
b03b8898 | 3849 | p.family = AF_EVPN; |
50f74cf1 | 3850 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 3851 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
3852 | ||
3853 | /* Additional information outside of prefix - ESI and GW IP */ | |
3854 | memset(&evpn, 0, sizeof(evpn)); | |
3855 | ||
3856 | /* Fetch ESI */ | |
c44ab6f1 AK |
3857 | if (attr) |
3858 | memcpy(&attr->esi, pfx, sizeof(esi_t)); | |
3859 | pfx += ESI_BYTES; | |
d62a17ae | 3860 | |
3861 | /* Fetch Ethernet Tag. */ | |
3862 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 3863 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 3864 | pfx += 4; |
3865 | ||
3866 | /* Fetch IP prefix length. */ | |
3867 | ippfx_len = *pfx++; | |
3868 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 3869 | flog_err( |
e50f7cfd | 3870 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 3871 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
3872 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
3873 | return -1; | |
3874 | } | |
3714a385 | 3875 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 3876 | |
3877 | /* Determine IPv4 or IPv6 prefix */ | |
3878 | /* Since the address and GW are from the same family, this just becomes | |
3879 | * a simple check on the total size. | |
3880 | */ | |
3881 | if (psize == 34) { | |
3714a385 | 3882 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
3883 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 3884 | pfx += 4; |
3885 | memcpy(&evpn.gw_ip.ipv4, pfx, 4); | |
3886 | pfx += 4; | |
c6ec0c74 | 3887 | gw_afi = AF_INET; |
d62a17ae | 3888 | } else { |
3714a385 | 3889 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
3890 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, 16); | |
d62a17ae | 3891 | pfx += 16; |
3892 | memcpy(&evpn.gw_ip.ipv6, pfx, 16); | |
3893 | pfx += 16; | |
c6ec0c74 | 3894 | gw_afi = AF_INET6; |
d62a17ae | 3895 | } |
3896 | ||
b57ba6d2 MK |
3897 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
3898 | memset(&label, 0, sizeof(label)); | |
3899 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 3900 | |
3901 | /* | |
3902 | * If in future, we are required to access additional fields, | |
996c9314 LB |
3903 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
3904 | * field | |
6b11bd8d | 3905 | */ |
d62a17ae | 3906 | |
c6ec0c74 KA |
3907 | if (attr) { |
3908 | is_valid_update = true; | |
0a50c248 | 3909 | if (is_zero_mac(&attr->rmac) && |
c6ec0c74 KA |
3910 | is_zero_gw_ip(&evpn.gw_ip, gw_afi)) |
3911 | is_valid_update = false; | |
3912 | ||
3913 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
3914 | is_valid_update = false; | |
3915 | } | |
3916 | ||
d62a17ae | 3917 | /* Process the route. */ |
c6ec0c74 | 3918 | if (is_valid_update) |
d62a17ae | 3919 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
3920 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3921 | &prd, &label, 1, 0, &evpn); |
d62a17ae | 3922 | else |
3923 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
3924 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 3925 | &prd, &label, 1, &evpn); |
d62a17ae | 3926 | |
3927 | return ret; | |
3928 | } | |
3929 | ||
5f040085 DS |
3930 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
3931 | const struct prefix_rd *prd, | |
3932 | mpls_label_t *label, uint32_t num_labels, | |
3933 | struct attr *attr) | |
d62a17ae | 3934 | { |
3935 | int len; | |
3936 | char temp[16]; | |
5f040085 | 3937 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 3938 | |
3939 | memset(&temp, 0, 16); | |
b03b8898 | 3940 | if (p->family != AF_EVPN) |
d62a17ae | 3941 | return; |
3942 | p_evpn_p = &(p->u.prefix_evpn); | |
3943 | ||
e9fc2840 | 3944 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 3945 | IP and GW-IP have to be both ipv4 or ipv6 |
3946 | */ | |
3714a385 | 3947 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 3948 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 3949 | else |
e9fc2840 | 3950 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 3951 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
3952 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
3953 | stream_put(s, prd->val, 8); | |
0af35d90 | 3954 | if (attr) |
c44ab6f1 | 3955 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 3956 | else |
c44ab6f1 | 3957 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 3958 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
3959 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
3960 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
3961 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 3962 | else |
3714a385 | 3963 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
0af35d90 | 3964 | if (attr) { |
3714a385 | 3965 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3966 | stream_put_ipv4(s, |
3967 | attr->evpn_overlay.gw_ip.ipv4.s_addr); | |
3968 | else | |
3969 | stream_put(s, &(attr->evpn_overlay.gw_ip.ipv6), 16); | |
3970 | } else { | |
3714a385 | 3971 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 3972 | stream_put_ipv4(s, 0); |
3973 | else | |
3974 | stream_put(s, &temp, 16); | |
3975 | } | |
3976 | ||
b57ba6d2 | 3977 | if (num_labels) |
d62a17ae | 3978 | stream_put(s, label, 3); |
3979 | else | |
3980 | stream_put3(s, 0); | |
128ea8ab | 3981 | } |
3982 | ||
3983 | /* | |
3984 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
3985 | */ | |
e3b78da8 | 3986 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 3987 | { |
e3b78da8 | 3988 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 3989 | |
d62a17ae | 3990 | /* Remove EVPN routes and schedule for processing. */ |
3991 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 3992 | |
d62a17ae | 3993 | /* Clear "live" flag and see if hash needs to be freed. */ |
3994 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
3995 | if (!is_vni_configured(vpn)) | |
3996 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 3997 | } |
3998 | ||
3999 | /* | |
4000 | * Free a VNI entry; iterator function called during cleanup. | |
4001 | */ | |
e3b78da8 | 4002 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4003 | { |
e3b78da8 | 4004 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4005 | |
d62a17ae | 4006 | delete_all_vni_routes(bgp, vpn); |
4007 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4008 | } |
4009 | ||
c581d8b0 MK |
4010 | /* |
4011 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4012 | */ | |
4013 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4014 | { | |
5e53dce3 | 4015 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4016 | |
c581d8b0 | 4017 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); |
10ebe1ab MK |
4018 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
4019 | ||
4020 | /* Map RT to VRF */ | |
5e53dce3 T |
4021 | bgp_evpn = bgp_get_evpn(); |
4022 | if (!bgp_evpn) | |
10ebe1ab MK |
4023 | return; |
4024 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
c581d8b0 MK |
4025 | } |
4026 | ||
4027 | /* | |
4028 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4029 | */ | |
4030 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4031 | { | |
4032 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl); | |
4033 | } | |
4034 | ||
4035 | /* | |
4036 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4037 | */ | |
4038 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4039 | { | |
4040 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4041 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4042 | } | |
4043 | ||
4044 | /* | |
4045 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4046 | */ | |
4047 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4048 | { | |
4049 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl); | |
4050 | } | |
128ea8ab | 4051 | |
f1f8b53c MK |
4052 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4053 | { | |
5e53dce3 | 4054 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4055 | struct listnode *node = NULL; |
4056 | struct bgpevpn *vpn = NULL; | |
4057 | ||
5e53dce3 T |
4058 | bgp_evpn = bgp_get_evpn(); |
4059 | if (!bgp_evpn) | |
f1f8b53c MK |
4060 | return; |
4061 | ||
4992b4ae MK |
4062 | /* update all type-5 routes */ |
4063 | update_advertise_vrf_routes(bgp_vrf); | |
4064 | ||
4065 | /* update all type-2 routes */ | |
f1f8b53c | 4066 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4067 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4068 | } |
4069 | ||
bf1061d8 VB |
4070 | /* |
4071 | * Handle autort change for a given VNI. | |
4072 | */ | |
e3b78da8 | 4073 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4074 | { |
e3b78da8 | 4075 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4076 | |
bf1061d8 VB |
4077 | if (!is_import_rt_configured(vpn)) { |
4078 | if (is_vni_live(vpn)) | |
4079 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4080 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4081 | list_delete_all_node(vpn->import_rtl); |
4082 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4083 | if (is_vni_live(vpn)) | |
4084 | bgp_evpn_install_routes(bgp, vpn); | |
4085 | } | |
4086 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4087 | list_delete_all_node(vpn->export_rtl); |
4088 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4089 | if (is_vni_live(vpn)) | |
4090 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4091 | } | |
4092 | } | |
4093 | ||
128ea8ab | 4094 | /* |
4095 | * Public functions. | |
4096 | */ | |
4097 | ||
5424b7ba | 4098 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4099 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4100 | afi_t afi, safi_t safi) |
4101 | { | |
4102 | int ret = 0; | |
4103 | struct prefix_evpn evp; | |
4104 | char buf[PREFIX_STRLEN]; | |
4105 | ||
31310b25 | 4106 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba MK |
4107 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
4108 | if (ret) { | |
af4c2728 | 4109 | flog_err( |
e50f7cfd | 4110 | EC_BGP_EVPN_ROUTE_DELETE, |
996c9314 LB |
4111 | "%u failed to delete type-5 route for prefix %s in vrf %s", |
4112 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf)), | |
4113 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
4114 | } |
4115 | } | |
4116 | ||
342dd0c6 | 4117 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 4118 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 4119 | { |
4120 | struct bgp_table *table = NULL; | |
9bcb3eef | 4121 | struct bgp_dest *dest = NULL; |
40381db7 | 4122 | struct bgp_path_info *pi; |
342dd0c6 | 4123 | |
053905d2 | 4124 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4125 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 4126 | /* Only care about "selected" routes. Also ensure that |
4127 | * these are routes that are injectable into EVPN. | |
4128 | */ | |
25f2ca53 | 4129 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 4130 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4131 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4132 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 4133 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 4134 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 4135 | safi); |
25f2ca53 | 4136 | break; |
4137 | } | |
4138 | } | |
4139 | } | |
5424b7ba | 4140 | } |
342dd0c6 | 4141 | |
5fd9c12b KA |
4142 | /* |
4143 | * evpn - enable advertisement of default g/w | |
4144 | */ | |
4145 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
4146 | safi_t safi, bool add) | |
4147 | { | |
4148 | struct prefix ip_prefix; | |
4149 | ||
4150 | /* form the default prefix 0.0.0.0/0 */ | |
4151 | memset(&ip_prefix, 0, sizeof(struct prefix)); | |
4152 | ip_prefix.family = afi2family(afi); | |
4153 | ||
4154 | if (add) { | |
4155 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
4156 | NULL, afi, safi); | |
4157 | } else { | |
4158 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
4159 | afi, safi); | |
4160 | } | |
4161 | } | |
4162 | ||
4163 | ||
2f69f6d3 | 4164 | /* |
4165 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
4166 | * to this function correspond to those of the source IP prefix (best | |
4167 | * path in the case of the attr. In the case of a local prefix (when we | |
4168 | * are advertising local subnets), the src_attr will be NULL. | |
4169 | */ | |
bd494ec5 | 4170 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
4171 | struct attr *src_attr, afi_t afi, |
4172 | safi_t safi) | |
5424b7ba MK |
4173 | { |
4174 | int ret = 0; | |
4175 | struct prefix_evpn evp; | |
4176 | char buf[PREFIX_STRLEN]; | |
7c82b312 | 4177 | |
31310b25 | 4178 | build_type5_prefix_from_ip_prefix(&evp, p); |
2f69f6d3 | 4179 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr); |
4180 | if (ret) | |
e50f7cfd | 4181 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
1c50c1c0 QY |
4182 | "%u: Failed to create type-5 route for prefix %s", |
4183 | bgp_vrf->vrf_id, prefix2str(p, buf, sizeof(buf))); | |
342dd0c6 | 4184 | } |
4185 | ||
2f69f6d3 | 4186 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
4187 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
4188 | * advertisement is enabled. | |
4189 | */ | |
996c9314 LB |
4190 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
4191 | safi_t safi) | |
342dd0c6 | 4192 | { |
4193 | struct bgp_table *table = NULL; | |
9bcb3eef | 4194 | struct bgp_dest *dest = NULL; |
40381db7 | 4195 | struct bgp_path_info *pi; |
342dd0c6 | 4196 | |
053905d2 | 4197 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 4198 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 4199 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 4200 | * attribute. Also, ensure that the route is injectable |
4201 | * into EVPN. | |
2f69f6d3 | 4202 | * TODO: Support for AddPath for EVPN. |
4203 | */ | |
9bcb3eef | 4204 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 4205 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 4206 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
4207 | |
4208 | /* apply the route-map */ | |
4209 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 4210 | route_map_result_t ret; |
e34291b8 | 4211 | struct bgp_path_info tmp_pi; |
4212 | struct bgp_path_info_extra tmp_pie; | |
4213 | struct attr tmp_attr; | |
4214 | ||
4215 | tmp_attr = *pi->attr; | |
4216 | ||
4217 | /* Fill temp path_info */ | |
9bcb3eef DS |
4218 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
4219 | dest, pi, pi->peer, | |
4220 | &tmp_attr); | |
e34291b8 | 4221 | |
4222 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 4223 | |
996c9314 LB |
4224 | ret = route_map_apply( |
4225 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
4226 | .map, | |
9bcb3eef | 4227 | bgp_dest_get_prefix(dest), |
b54892e0 | 4228 | RMAP_BGP, &tmp_pi); |
e34291b8 | 4229 | if (ret == RMAP_DENYMATCH) { |
4230 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 4231 | continue; |
e34291b8 | 4232 | } |
4233 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4234 | bgp_vrf, |
9bcb3eef | 4235 | bgp_dest_get_prefix(dest), |
b54892e0 | 4236 | &tmp_attr, afi, safi); |
e34291b8 | 4237 | } else |
4238 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 4239 | bgp_vrf, |
9bcb3eef | 4240 | bgp_dest_get_prefix(dest), |
b54892e0 | 4241 | pi->attr, afi, safi); |
2f69f6d3 | 4242 | break; |
4243 | } | |
4244 | } | |
31310b25 | 4245 | } |
342dd0c6 | 4246 | } |
4247 | ||
996c9314 | 4248 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl) |
c581d8b0 MK |
4249 | { |
4250 | struct listnode *node, *nnode, *node_to_del; | |
4251 | struct ecommunity *ecom, *ecom_auto; | |
4252 | struct ecommunity_val eval; | |
4253 | ||
bf1061d8 VB |
4254 | if (bgp->advertise_autort_rfc8365) |
4255 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 MK |
4256 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
4257 | ||
4258 | ecom_auto = ecommunity_new(); | |
1207a5bc | 4259 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 MK |
4260 | node_to_del = NULL; |
4261 | ||
4262 | for (ALL_LIST_ELEMENTS(rtl, node, nnode, ecom)) { | |
4263 | if (ecommunity_match(ecom, ecom_auto)) { | |
4264 | ecommunity_free(&ecom); | |
4265 | node_to_del = node; | |
4266 | } | |
4267 | } | |
4268 | ||
4269 | if (node_to_del) | |
4270 | list_delete_node(rtl, node_to_del); | |
4271 | ||
4272 | ecommunity_free(&ecom_auto); | |
4273 | } | |
4274 | ||
4275 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
10ebe1ab | 4276 | struct ecommunity *ecomadd) |
c581d8b0 | 4277 | { |
5ba238b7 | 4278 | /* uninstall routes from vrf */ |
3d0b43d7 | 4279 | if (is_l3vni_live(bgp_vrf)) |
4280 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4281 | |
4282 | /* Cleanup the RT to VRF mapping */ | |
4283 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4284 | ||
c581d8b0 MK |
4285 | /* Remove auto generated RT */ |
4286 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
4287 | ||
4288 | /* Add the newly configured RT to RT list */ | |
4289 | listnode_add_sort(bgp_vrf->vrf_import_rtl, ecomadd); | |
4290 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); | |
4291 | ||
3d0b43d7 | 4292 | /* map VRF to its RTs and install routes matching the new RTs */ |
4293 | if (is_l3vni_live(bgp_vrf)) { | |
4294 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4295 | install_routes_for_vrf(bgp_vrf); | |
4296 | } | |
c581d8b0 MK |
4297 | } |
4298 | ||
4299 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
4300 | struct ecommunity *ecomdel) | |
4301 | { | |
4302 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4303 | struct ecommunity *ecom = NULL; | |
4304 | ||
5ba238b7 | 4305 | /* uninstall routes from vrf */ |
3d0b43d7 | 4306 | if (is_l3vni_live(bgp_vrf)) |
4307 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
4308 | |
4309 | /* Cleanup the RT to VRF mapping */ | |
4310 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
4311 | ||
c581d8b0 MK |
4312 | /* remove the RT from the RT list */ |
4313 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4314 | if (ecommunity_match(ecom, ecomdel)) { | |
4315 | ecommunity_free(&ecom); | |
4316 | node_to_del = node; | |
4317 | break; | |
4318 | } | |
4319 | } | |
4320 | ||
4321 | if (node_to_del) | |
4322 | list_delete_node(bgp_vrf->vrf_import_rtl, node_to_del); | |
4323 | ||
b3a4db3d | 4324 | assert(bgp_vrf->vrf_import_rtl); |
c581d8b0 | 4325 | /* fallback to auto import rt, if this was the last RT */ |
1230a82d | 4326 | if (bgp_vrf->vrf_import_rtl && list_isempty(bgp_vrf->vrf_import_rtl)) { |
c581d8b0 | 4327 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
ebdc9e64 AD |
4328 | if (is_l3vni_live(bgp_vrf)) |
4329 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4330 | } |
4331 | ||
3d0b43d7 | 4332 | /* map VRFs to its RTs and install routes matching this new RT */ |
4333 | if (is_l3vni_live(bgp_vrf)) { | |
4334 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
4335 | install_routes_for_vrf(bgp_vrf); | |
4336 | } | |
c581d8b0 MK |
4337 | } |
4338 | ||
4339 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4340 | struct ecommunity *ecomadd) | |
4341 | { | |
4342 | /* remove auto-generated RT */ | |
4343 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
4344 | ||
4345 | /* Add the new RT to the RT list */ | |
4346 | listnode_add_sort(bgp_vrf->vrf_export_rtl, ecomadd); | |
4347 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); | |
4348 | ||
ebdc9e64 AD |
4349 | if (is_l3vni_live(bgp_vrf)) |
4350 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4351 | } |
4352 | ||
4353 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
4354 | struct ecommunity *ecomdel) | |
4355 | { | |
4356 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; | |
4357 | struct ecommunity *ecom = NULL; | |
4358 | ||
4359 | /* Remove the RT from the RT list */ | |
4360 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_export_rtl, node, nnode, ecom)) { | |
4361 | if (ecommunity_match(ecom, ecomdel)) { | |
4362 | ecommunity_free(&ecom); | |
4363 | node_to_del = node; | |
4364 | break; | |
4365 | } | |
4366 | } | |
4367 | ||
4368 | if (node_to_del) | |
4369 | list_delete_node(bgp_vrf->vrf_export_rtl, node_to_del); | |
4370 | ||
1525e99f DS |
4371 | /* |
4372 | * Temporary assert to make SA happy. | |
4373 | * The ALL_LIST_ELEMENTS macro above has a NULL check | |
4374 | * which means that SA is going to complain about | |
4375 | * the list_isempty call, which doesn't NULL check. | |
4376 | * So until we get this situation cleaned up, here | |
4377 | * we are. | |
4378 | */ | |
4379 | assert(bgp_vrf->vrf_export_rtl); | |
4380 | ||
c581d8b0 | 4381 | /* fall back to auto-generated RT if this was the last RT */ |
1525e99f | 4382 | if (list_isempty(bgp_vrf->vrf_export_rtl)) { |
c581d8b0 | 4383 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
ebdc9e64 AD |
4384 | if (is_l3vni_live(bgp_vrf)) |
4385 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4386 | } |
4387 | ||
ebdc9e64 AD |
4388 | if (is_l3vni_live(bgp_vrf)) |
4389 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
4390 | } |
4391 | ||
2d48ee25 | 4392 | /* |
4393 | * Handle change to BGP router id. This is invoked twice by the change | |
4394 | * handler, first before the router id has been changed and then after | |
4395 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 4396 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 4397 | * will result in the routes being re-advertised. |
4398 | */ | |
d62a17ae | 4399 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 4400 | { |
5394a276 CS |
4401 | struct listnode *node; |
4402 | struct bgp *bgp_vrf; | |
4403 | ||
676f83b9 | 4404 | if (withdraw) { |
4405 | ||
4406 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 4407 | stored in the global table for this vrf |
4408 | */ | |
80b140af | 4409 | withdraw_router_id_vrf(bgp); |
676f83b9 | 4410 | |
4411 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 4412 | * L2-VNIs |
4413 | */ | |
d62a17ae | 4414 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4415 | (void (*)(struct hash_bucket *, |
d62a17ae | 4416 | void *))withdraw_router_id_vni, |
4417 | bgp); | |
5394a276 CS |
4418 | |
4419 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4420 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4421 | if (bgp_vrf->evpn_info->advertise_pip && | |
4422 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4423 | == INADDR_ANY)) | |
4424 | bgp_vrf->evpn_info->pip_ip.s_addr | |
4425 | = INADDR_ANY; | |
4426 | } | |
4427 | } | |
676f83b9 | 4428 | } else { |
4429 | ||
5394a276 CS |
4430 | /* Assign new default instance router-id */ |
4431 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
4432 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
4433 | if (bgp_vrf->evpn_info->advertise_pip && | |
4434 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
4435 | == INADDR_ANY)) { | |
4436 | bgp_vrf->evpn_info->pip_ip = | |
4437 | bgp->router_id; | |
4438 | /* advertise type-5 routes with | |
4439 | * new nexthop | |
4440 | */ | |
4441 | update_advertise_vrf_routes(bgp_vrf); | |
4442 | } | |
4443 | } | |
4444 | } | |
4445 | ||
676f83b9 | 4446 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 4447 | * RD |
4448 | */ | |
80b140af | 4449 | update_router_id_vrf(bgp); |
676f83b9 | 4450 | |
4451 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 4452 | * new RD |
4453 | */ | |
d62a17ae | 4454 | hash_iterate(bgp->vnihash, |
e3b78da8 | 4455 | (void (*)(struct hash_bucket *, |
d62a17ae | 4456 | void *))update_router_id_vni, |
4457 | bgp); | |
676f83b9 | 4458 | } |
2d48ee25 | 4459 | } |
4460 | ||
bf1061d8 VB |
4461 | /* |
4462 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
4463 | */ | |
4464 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
4465 | { | |
4466 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 4467 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
4468 | void*))update_autort_vni, |
4469 | bgp); | |
4470 | } | |
4471 | ||
90e60aa7 | 4472 | /* |
4473 | * Handle change to export RT - update and advertise local routes. | |
4474 | */ | |
d62a17ae | 4475 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4476 | { |
d62a17ae | 4477 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 4478 | } |
4479 | ||
996c9314 | 4480 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 4481 | { |
4482 | if (withdraw) | |
4483 | delete_withdraw_vrf_routes(bgp_vrf); | |
4484 | else | |
4485 | update_advertise_vrf_routes(bgp_vrf); | |
4486 | } | |
4487 | ||
90e60aa7 | 4488 | /* |
4489 | * Handle change to RD. This is invoked twice by the change handler, | |
4490 | * first before the RD has been changed and then after the RD has | |
4491 | * been changed. The first invocation will result in local routes | |
4492 | * of this VNI being deleted and withdrawn and the next will result | |
4493 | * in the routes being re-advertised. | |
4494 | */ | |
d62a17ae | 4495 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
4496 | int withdraw) | |
90e60aa7 | 4497 | { |
d62a17ae | 4498 | if (withdraw) |
4499 | delete_withdraw_vni_routes(bgp, vpn); | |
4500 | else | |
4501 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 4502 | } |
4503 | ||
4504 | /* | |
4505 | * Install routes for this VNI. Invoked upon change to Import RT. | |
4506 | */ | |
d62a17ae | 4507 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4508 | { |
d62a17ae | 4509 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 4510 | } |
4511 | ||
4512 | /* | |
4513 | * Uninstall all routes installed for this VNI. Invoked upon change | |
4514 | * to Import RT. | |
4515 | */ | |
d62a17ae | 4516 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4517 | { |
d62a17ae | 4518 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 4519 | } |
4520 | ||
b16031a2 | 4521 | /* |
b57ba6d2 | 4522 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 4523 | */ |
d7c0a89a | 4524 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 4525 | int len) |
b16031a2 | 4526 | { |
b57ba6d2 | 4527 | vni_t vni1, vni2; |
b16031a2 | 4528 | |
b57ba6d2 MK |
4529 | vni1 = label2vni(label); |
4530 | if (num_labels == 2) { | |
996c9314 | 4531 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
4532 | snprintf(buf, len, "%u/%u", vni1, vni2); |
4533 | } else | |
4534 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 4535 | return buf; |
b16031a2 | 4536 | } |
4537 | ||
9c92b5f7 MK |
4538 | /* |
4539 | * Function to convert evpn route to json format. | |
4540 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
4541 | */ | |
bd494ec5 | 4542 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 4543 | { |
b682f6de | 4544 | char buf1[ETHER_ADDR_STRLEN]; |
4545 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
4546 | uint8_t family; |
4547 | uint8_t prefixlen; | |
9c92b5f7 | 4548 | |
b682f6de | 4549 | if (!json) |
4550 | return; | |
9c92b5f7 | 4551 | |
44c69747 LK |
4552 | json_object_int_add(json, "routeType", p->prefix.route_type); |
4553 | ||
4554 | switch (p->prefix.route_type) { | |
4555 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4556 | json_object_int_add(json, "ethTag", |
44c69747 LK |
4557 | p->prefix.macip_addr.eth_tag); |
4558 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
4559 | json_object_string_add(json, "mac", | |
4560 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
4561 | sizeof(buf1))); | |
4562 | ||
4563 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
4564 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
4565 | AF_INET6; | |
4566 | prefixlen = (family == AF_INET) ? | |
4567 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
4568 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
4569 | buf2, PREFIX2STR_BUFFER); | |
4570 | json_object_int_add(json, "ipLen", prefixlen); | |
4571 | json_object_string_add(json, "ip", buf2); | |
4572 | } | |
4573 | break; | |
dff8f48d | 4574 | |
44c69747 LK |
4575 | case BGP_EVPN_IMET_ROUTE: |
4576 | json_object_int_add(json, "ethTag", | |
4577 | p->prefix.imet_addr.eth_tag); | |
4578 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4579 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
4580 | IPV6_MAX_BITLEN; | |
4581 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
4582 | PREFIX2STR_BUFFER); | |
4583 | json_object_int_add(json, "ipLen", prefixlen); | |
4584 | json_object_string_add(json, "ip", buf2); | |
4585 | break; | |
dff8f48d | 4586 | |
44c69747 LK |
4587 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4588 | json_object_int_add(json, "ethTag", | |
4589 | p->prefix.prefix_addr.eth_tag); | |
4590 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
4591 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
4592 | buf2, sizeof(buf2)); | |
4593 | json_object_int_add(json, "ipLen", | |
4594 | p->prefix.prefix_addr.ip_prefix_length); | |
4595 | json_object_string_add(json, "ip", buf2); | |
4596 | break; | |
4597 | ||
4598 | default: | |
4599 | break; | |
dff8f48d | 4600 | } |
9c92b5f7 MK |
4601 | } |
4602 | ||
128ea8ab | 4603 | /* |
4604 | * Encode EVPN prefix in Update (MP_REACH) | |
4605 | */ | |
5f040085 DS |
4606 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
4607 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a QY |
4608 | uint32_t num_labels, struct attr *attr, |
4609 | int addpath_encode, uint32_t addpath_tx_id) | |
d62a17ae | 4610 | { |
4611 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 4612 | int len, ipa_len = 0; |
d62a17ae | 4613 | |
4614 | if (addpath_encode) | |
4615 | stream_putl(s, addpath_tx_id); | |
4616 | ||
4617 | /* Route type */ | |
4618 | stream_putc(s, evp->prefix.route_type); | |
4619 | ||
4620 | switch (evp->prefix.route_type) { | |
4621 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 4622 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 4623 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 4624 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 4625 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
4626 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
4627 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
4628 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
4629 | len += 3; | |
4630 | stream_putc(s, len); | |
996c9314 | 4631 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 4632 | if (attr) |
c44ab6f1 | 4633 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
4634 | else |
4635 | stream_put(s, 0, 10); | |
3714a385 | 4636 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 4637 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 4638 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
4639 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
4640 | if (ipa_len) /* IP */ | |
4641 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
4642 | ipa_len); | |
b57ba6d2 MK |
4643 | /* 1st label is the L2 VNI */ |
4644 | stream_put(s, label, BGP_LABEL_BYTES); | |
4645 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
4646 | if (ipa_len && num_labels > 1) | |
996c9314 | 4647 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 4648 | break; |
4649 | ||
4650 | case BGP_EVPN_IMET_ROUTE: | |
4651 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
4652 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 4653 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 4654 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
4655 | /* Originating Router's IP Addr */ | |
3714a385 | 4656 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 4657 | break; |
4658 | ||
50f74cf1 | 4659 | case BGP_EVPN_ES_ROUTE: |
4660 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
4661 | stream_put(s, prd->val, 8); /* RD */ | |
4662 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
4663 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
4664 | /* VTEP IP */ |
4665 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 4666 | break; |
4667 | ||
c44ab6f1 AK |
4668 | case BGP_EVPN_AD_ROUTE: |
4669 | /* RD, ESI, EthTag, 1 VNI */ | |
4670 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
4671 | stream_putc(s, len); | |
4672 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
4673 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
4674 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
4675 | stream_put(s, label, BGP_LABEL_BYTES); | |
4676 | break; | |
4677 | ||
d62a17ae | 4678 | case BGP_EVPN_IP_PREFIX_ROUTE: |
4679 | /* TODO: AddPath support. */ | |
b57ba6d2 | 4680 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 4681 | break; |
4682 | ||
4683 | default: | |
4684 | break; | |
4685 | } | |
4686 | } | |
4687 | ||
4688 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
4689 | struct bgp_nlri *packet, int withdraw) | |
4690 | { | |
d7c0a89a QY |
4691 | uint8_t *pnt; |
4692 | uint8_t *lim; | |
d62a17ae | 4693 | afi_t afi; |
4694 | safi_t safi; | |
d7c0a89a | 4695 | uint32_t addpath_id; |
d62a17ae | 4696 | int addpath_encoded; |
4697 | int psize = 0; | |
d7c0a89a | 4698 | uint8_t rtype; |
d62a17ae | 4699 | struct prefix p; |
4700 | ||
d62a17ae | 4701 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
4702 | pnt = packet->nlri; | |
4703 | lim = pnt + packet->length; | |
4704 | afi = packet->afi; | |
4705 | safi = packet->safi; | |
4706 | addpath_id = 0; | |
4707 | ||
4708 | addpath_encoded = | |
4709 | (CHECK_FLAG(peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) | |
4710 | && CHECK_FLAG(peer->af_cap[afi][safi], | |
4711 | PEER_CAP_ADDPATH_AF_TX_RCV)); | |
4712 | ||
4713 | for (; pnt < lim; pnt += psize) { | |
4714 | /* Clear prefix structure. */ | |
4715 | memset(&p, 0, sizeof(struct prefix)); | |
4716 | ||
4717 | /* Deal with path-id if AddPath is supported. */ | |
4718 | if (addpath_encoded) { | |
4719 | /* When packet overflow occurs return immediately. */ | |
4720 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 4721 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4722 | |
a3a850a1 S |
4723 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
4724 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 4725 | pnt += BGP_ADDPATH_ID_LEN; |
4726 | } | |
4727 | ||
4728 | /* All EVPN NLRI types start with type and length. */ | |
4729 | if (pnt + 2 > lim) | |
513386b5 | 4730 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 4731 | |
4732 | rtype = *pnt++; | |
3f54c705 | 4733 | psize = *pnt++; |
d62a17ae | 4734 | |
4735 | /* When packet overflow occur return immediately. */ | |
4736 | if (pnt + psize > lim) | |
513386b5 | 4737 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 4738 | |
4739 | switch (rtype) { | |
4740 | case BGP_EVPN_MAC_IP_ROUTE: | |
4741 | if (process_type2_route(peer, afi, safi, | |
4742 | withdraw ? NULL : attr, pnt, | |
4743 | psize, addpath_id)) { | |
af4c2728 | 4744 | flog_err( |
e50f7cfd | 4745 | EC_BGP_EVPN_FAIL, |
d62a17ae | 4746 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
4747 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4748 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 4749 | } |
4750 | break; | |
4751 | ||
4752 | case BGP_EVPN_IMET_ROUTE: | |
4753 | if (process_type3_route(peer, afi, safi, | |
4754 | withdraw ? NULL : attr, pnt, | |
4755 | psize, addpath_id)) { | |
af4c2728 | 4756 | flog_err( |
e50f7cfd | 4757 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4758 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
4759 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4760 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 4761 | } |
4762 | break; | |
4763 | ||
50f74cf1 | 4764 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 4765 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 4766 | withdraw ? NULL : attr, pnt, |
4767 | psize, addpath_id)) { | |
af4c2728 | 4768 | flog_err( |
e50f7cfd | 4769 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 4770 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
4771 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4772 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 4773 | } |
4774 | break; | |
4775 | ||
c44ab6f1 AK |
4776 | case BGP_EVPN_AD_ROUTE: |
4777 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
4778 | withdraw ? NULL : attr, pnt, | |
4779 | psize, addpath_id)) { | |
4780 | flog_err( | |
4781 | EC_BGP_PKT_PROCESS, | |
4782 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
4783 | peer->bgp->vrf_id, peer->host, psize); | |
4784 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
4785 | } | |
4786 | break; | |
4787 | ||
d62a17ae | 4788 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
4789 | if (process_type5_route(peer, afi, safi, |
4790 | withdraw ? NULL : attr, pnt, | |
4791 | psize, addpath_id)) { | |
af4c2728 | 4792 | flog_err( |
e50f7cfd | 4793 | EC_BGP_PKT_PROCESS, |
d62a17ae | 4794 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
4795 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 4796 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 4797 | } |
4798 | break; | |
4799 | ||
4800 | default: | |
4801 | break; | |
4802 | } | |
4803 | } | |
4804 | ||
4805 | /* Packet length consistency check. */ | |
4806 | if (pnt != lim) | |
513386b5 | 4807 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 4808 | |
513386b5 | 4809 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 4810 | } |
4811 | ||
10ebe1ab MK |
4812 | /* |
4813 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
4814 | * The mapping will be used during route processing. | |
4815 | * bgp_def: default bgp instance | |
4816 | * bgp_vrf: specific bgp vrf instance on which RT is configured | |
4817 | */ | |
4818 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
4819 | { | |
4820 | int i = 0; | |
4821 | struct ecommunity_val *eval = NULL; | |
4822 | struct listnode *node = NULL, *nnode = NULL; | |
4823 | struct ecommunity *ecom = NULL; | |
4824 | ||
4825 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4826 | for (i = 0; i < ecom->size; i++) { | |
4827 | eval = (struct ecommunity_val *)(ecom->val | |
4828 | + (i | |
4829 | * ECOMMUNITY_SIZE)); | |
4830 | map_vrf_to_rt(bgp_vrf, eval); | |
4831 | } | |
4832 | } | |
4833 | } | |
4834 | ||
4835 | /* | |
4836 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
4837 | */ | |
4838 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
4839 | { | |
4840 | int i; | |
4841 | struct ecommunity_val *eval; | |
4842 | struct listnode *node, *nnode; | |
4843 | struct ecommunity *ecom; | |
4844 | ||
4845 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, ecom)) { | |
4846 | for (i = 0; i < ecom->size; i++) { | |
4847 | struct vrf_irt_node *irt; | |
4848 | struct ecommunity_val eval_tmp; | |
4849 | ||
4850 | eval = (struct ecommunity_val *)(ecom->val | |
4851 | + (i | |
4852 | * ECOMMUNITY_SIZE)); | |
4853 | /* If using "automatic" RT, we only care about the | |
4854 | * local-admin sub-field. | |
4855 | * This is to facilitate using VNI as the RT for EBGP | |
4856 | * peering too. | |
4857 | */ | |
4858 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4859 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, | |
4860 | BGP_VRF_IMPORT_RT_CFGD)) | |
4861 | mask_ecom_global_admin(&eval_tmp, eval); | |
4862 | ||
4863 | irt = lookup_vrf_import_rt(&eval_tmp); | |
4864 | if (irt) | |
4865 | unmap_vrf_from_rt(bgp_vrf, irt); | |
4866 | } | |
4867 | } | |
4868 | } | |
4869 | ||
4870 | ||
128ea8ab | 4871 | /* |
4872 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
4873 | * The mapping will be used during route processing. | |
4874 | */ | |
d62a17ae | 4875 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4876 | { |
d62a17ae | 4877 | int i; |
4878 | struct ecommunity_val *eval; | |
4879 | struct listnode *node, *nnode; | |
4880 | struct ecommunity *ecom; | |
128ea8ab | 4881 | |
d62a17ae | 4882 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4883 | for (i = 0; i < ecom->size; i++) { | |
4884 | eval = (struct ecommunity_val *)(ecom->val | |
4885 | + (i | |
4886 | * ECOMMUNITY_SIZE)); | |
4887 | map_vni_to_rt(bgp, vpn, eval); | |
4888 | } | |
4889 | } | |
128ea8ab | 4890 | } |
4891 | ||
4892 | /* | |
4893 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
4894 | */ | |
d62a17ae | 4895 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4896 | { |
d62a17ae | 4897 | int i; |
4898 | struct ecommunity_val *eval; | |
4899 | struct listnode *node, *nnode; | |
4900 | struct ecommunity *ecom; | |
128ea8ab | 4901 | |
d62a17ae | 4902 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
4903 | for (i = 0; i < ecom->size; i++) { | |
4904 | struct irt_node *irt; | |
4905 | struct ecommunity_val eval_tmp; | |
128ea8ab | 4906 | |
d62a17ae | 4907 | eval = (struct ecommunity_val *)(ecom->val |
4908 | + (i | |
4909 | * ECOMMUNITY_SIZE)); | |
4910 | /* If using "automatic" RT, we only care about the | |
4911 | * local-admin sub-field. | |
4912 | * This is to facilitate using VNI as the RT for EBGP | |
4913 | * peering too. | |
4914 | */ | |
4915 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
4916 | if (!is_import_rt_configured(vpn)) | |
4917 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 4918 | |
d62a17ae | 4919 | irt = lookup_import_rt(bgp, &eval_tmp); |
4920 | if (irt) | |
4921 | unmap_vni_from_rt(bgp, vpn, irt); | |
4922 | } | |
4923 | } | |
128ea8ab | 4924 | } |
4925 | ||
4926 | /* | |
4927 | * Derive Import RT automatically for VNI and map VNI to RT. | |
4928 | * The mapping will be used during route processing. | |
4929 | */ | |
d62a17ae | 4930 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4931 | { |
c581d8b0 | 4932 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl); |
d62a17ae | 4933 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 4934 | |
d62a17ae | 4935 | /* Map RT to VNI */ |
4936 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 4937 | } |
4938 | ||
4939 | /* | |
4940 | * Derive Export RT automatically for VNI. | |
4941 | */ | |
d62a17ae | 4942 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4943 | { |
c581d8b0 | 4944 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl); |
d62a17ae | 4945 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 4946 | } |
4947 | ||
676f83b9 | 4948 | /* |
4949 | * Derive RD automatically for VNI using passed information - it | |
4950 | * is of the form RouterId:unique-id-for-vni. | |
4951 | */ | |
4952 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
4953 | { | |
9e97ff03 CS |
4954 | if (is_vrf_rd_configured(bgp)) |
4955 | return; | |
4956 | ||
92708db6 | 4957 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 4958 | } |
4959 | ||
128ea8ab | 4960 | /* |
4961 | * Derive RD automatically for VNI using passed information - it | |
4962 | * is of the form RouterId:unique-id-for-vni. | |
4963 | */ | |
d62a17ae | 4964 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 4965 | { |
c44ab6f1 | 4966 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 4967 | |
d62a17ae | 4968 | vpn->prd.family = AF_UNSPEC; |
4969 | vpn->prd.prefixlen = 64; | |
772270f3 QY |
4970 | snprintf(buf, sizeof(buf), "%s:%hu", inet_ntoa(bgp->router_id), |
4971 | vpn->rd_id); | |
cbb65f5e | 4972 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 4973 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 4974 | } |
4975 | ||
7df407ed CS |
4976 | /* |
4977 | * Lookup L3-VNI | |
4978 | */ | |
4979 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
4980 | { | |
4981 | struct list *inst = bm->bgp; | |
4982 | struct listnode *node; | |
4983 | struct bgp *bgp_vrf; | |
4984 | ||
4985 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
4986 | if (bgp_vrf->l3vni == vni) | |
4987 | return true; | |
4988 | } | |
4989 | ||
4990 | return false; | |
4991 | } | |
4992 | ||
128ea8ab | 4993 | /* |
4994 | * Lookup VNI. | |
4995 | */ | |
d62a17ae | 4996 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 4997 | { |
d62a17ae | 4998 | struct bgpevpn *vpn; |
4999 | struct bgpevpn tmp; | |
128ea8ab | 5000 | |
d62a17ae | 5001 | memset(&tmp, 0, sizeof(struct bgpevpn)); |
5002 | tmp.vni = vni; | |
5003 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5004 | return vpn; | |
128ea8ab | 5005 | } |
5006 | ||
5007 | /* | |
5008 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5009 | */ | |
d62a17ae | 5010 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5011 | struct in_addr originator_ip, |
5012 | vrf_id_t tenant_vrf_id, | |
5013 | struct in_addr mcast_grp) | |
128ea8ab | 5014 | { |
d62a17ae | 5015 | struct bgpevpn *vpn; |
128ea8ab | 5016 | |
d62a17ae | 5017 | if (!bgp) |
5018 | return NULL; | |
128ea8ab | 5019 | |
d62a17ae | 5020 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5021 | |
d62a17ae | 5022 | /* Set values - RD and RT set to defaults. */ |
5023 | vpn->vni = vni; | |
5024 | vpn->originator_ip = originator_ip; | |
29c53922 | 5025 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5026 | vpn->mcast_grp = mcast_grp; |
128ea8ab | 5027 | |
d62a17ae | 5028 | /* Initialize route-target import and export lists */ |
5029 | vpn->import_rtl = list_new(); | |
5030 | vpn->import_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5031 | vpn->import_rtl->del = evpn_xxport_delete_ecomm; |
d62a17ae | 5032 | vpn->export_rtl = list_new(); |
5033 | vpn->export_rtl->cmp = (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5034 | vpn->export_rtl->del = evpn_xxport_delete_ecomm; |
e9eb5f63 | 5035 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5036 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5037 | |
d62a17ae | 5038 | /* Initialize EVPN route table. */ |
960035b2 | 5039 | vpn->route_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); |
128ea8ab | 5040 | |
d62a17ae | 5041 | /* Add to hash */ |
5042 | if (!hash_get(bgp->vnihash, vpn, hash_alloc_intern)) { | |
5043 | XFREE(MTYPE_BGP_EVPN, vpn); | |
5044 | return NULL; | |
5045 | } | |
6a8657d0 MK |
5046 | |
5047 | /* add to l2vni list on corresponding vrf */ | |
5048 | bgpevpn_link_to_l3vni(vpn); | |
5049 | ||
c44ab6f1 AK |
5050 | bgp_evpn_vni_es_init(vpn); |
5051 | ||
d62a17ae | 5052 | QOBJ_REG(vpn, bgpevpn); |
5053 | return vpn; | |
128ea8ab | 5054 | } |
5055 | ||
5056 | /* | |
5057 | * Free a given VPN - called in multiple scenarios such as zebra | |
5058 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
5059 | * This just frees appropriate memory, caller should have taken other | |
5060 | * needed actions. | |
5061 | */ | |
d62a17ae | 5062 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5063 | { |
c44ab6f1 | 5064 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 5065 | bgpevpn_unlink_from_l3vni(vpn); |
d62a17ae | 5066 | bgp_table_unlock(vpn->route_table); |
5067 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
6a154c88 DL |
5068 | list_delete(&vpn->import_rtl); |
5069 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 5070 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5071 | hash_release(bgp->vnihash, vpn); |
5072 | QOBJ_UNREG(vpn); | |
5073 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 5074 | } |
5075 | ||
50f74cf1 | 5076 | /* |
5077 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 5078 | */ |
d62a17ae | 5079 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5080 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5081 | { |
40381db7 | 5082 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 5083 | } |
5084 | ||
5085 | /* | |
50f74cf1 | 5086 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 5087 | */ |
d62a17ae | 5088 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 5089 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 5090 | { |
40381db7 | 5091 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 5092 | } |
5093 | ||
db0e1937 MK |
5094 | /* filter routes which have martian next hops */ |
5095 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
5096 | { | |
0291c246 MK |
5097 | afi_t afi; |
5098 | safi_t safi; | |
9bcb3eef | 5099 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 5100 | struct bgp_table *table; |
40381db7 | 5101 | struct bgp_path_info *pi; |
db0e1937 MK |
5102 | |
5103 | afi = AFI_L2VPN; | |
5104 | safi = SAFI_EVPN; | |
5105 | ||
5106 | /* Walk entire global routing table and evaluate routes which could be | |
5107 | * imported into this VPN. Note that we cannot just look at the routes | |
5108 | * for the VNI's RD - | |
5109 | * remote routes applicable for this VNI could have any RD. | |
5110 | */ | |
5111 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
5112 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
5113 | rd_dest = bgp_route_next(rd_dest)) { | |
5114 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
5115 | if (!table) |
5116 | continue; | |
5117 | ||
9bcb3eef DS |
5118 | for (dest = bgp_table_top(table); dest; |
5119 | dest = bgp_route_next(dest)) { | |
db0e1937 | 5120 | |
9bcb3eef | 5121 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 5122 | pi = pi->next) { |
db0e1937 MK |
5123 | |
5124 | /* Consider "valid" remote routes applicable for | |
5125 | * this VNI. */ | |
40381db7 DS |
5126 | if (!(pi->type == ZEBRA_ROUTE_BGP |
5127 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 5128 | continue; |
9bcb3eef DS |
5129 | if (bgp_nexthop_self(bgp, afi, pi->type, |
5130 | pi->sub_type, pi->attr, | |
5131 | dest)) { | |
b54892e0 | 5132 | const struct prefix *p = |
9bcb3eef | 5133 | bgp_dest_get_prefix(dest); |
db0e1937 | 5134 | |
b54892e0 DS |
5135 | if (bgp_debug_update(pi->peer, p, NULL, |
5136 | 1)) { | |
5137 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 5138 | |
b54892e0 | 5139 | bgp_dump_attr(pi->attr, |
5022c833 DA |
5140 | attr_str, |
5141 | sizeof(attr_str)); | |
db0e1937 | 5142 | |
db0e1937 | 5143 | zlog_debug( |
56ca3b5b | 5144 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 5145 | bgp->vrf_id, dest, |
db0e1937 | 5146 | attr_str); |
b54892e0 | 5147 | } |
db0e1937 | 5148 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 5149 | p, pi); |
db0e1937 | 5150 | |
9bcb3eef | 5151 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 5152 | safi); |
db0e1937 | 5153 | } |
db0e1937 MK |
5154 | } |
5155 | } | |
5156 | } | |
5157 | ||
5158 | return 0; | |
5159 | } | |
5160 | ||
128ea8ab | 5161 | /* |
5162 | * Handle del of a local MACIP. | |
5163 | */ | |
d62a17ae | 5164 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 5165 | struct ipaddr *ip, int state) |
128ea8ab | 5166 | { |
d62a17ae | 5167 | struct bgpevpn *vpn; |
5168 | struct prefix_evpn p; | |
9bcb3eef | 5169 | struct bgp_dest *dest; |
128ea8ab | 5170 | |
d62a17ae | 5171 | /* Lookup VNI hash - should exist. */ |
5172 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5173 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5174 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5175 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 5176 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5177 | return -1; | |
5178 | } | |
128ea8ab | 5179 | |
d62a17ae | 5180 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
5181 | if (state == ZEBRA_NEIGH_ACTIVE) { |
5182 | /* Remove EVPN type-2 route and schedule for processing. */ | |
5183 | delete_evpn_route(bgp, vpn, &p); | |
5184 | } else { | |
5185 | /* Re-instate the current remote best path if any */ | |
9bcb3eef DS |
5186 | dest = bgp_node_lookup(vpn->route_table, (struct prefix *)&p); |
5187 | if (dest) | |
5188 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); | |
ec0ab544 | 5189 | } |
128ea8ab | 5190 | |
d62a17ae | 5191 | return 0; |
128ea8ab | 5192 | } |
5193 | ||
5194 | /* | |
5195 | * Handle add of a local MACIP. | |
5196 | */ | |
d62a17ae | 5197 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 5198 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 5199 | { |
d62a17ae | 5200 | struct bgpevpn *vpn; |
5201 | struct prefix_evpn p; | |
128ea8ab | 5202 | |
d62a17ae | 5203 | /* Lookup VNI hash - should exist. */ |
5204 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5205 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 5206 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 5207 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 5208 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
5209 | return -1; | |
5210 | } | |
128ea8ab | 5211 | |
d62a17ae | 5212 | /* Create EVPN type-2 route and schedule for processing. */ |
5213 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 5214 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
d62a17ae | 5215 | char buf[ETHER_ADDR_STRLEN]; |
5216 | char buf2[INET6_ADDRSTRLEN]; | |
128ea8ab | 5217 | |
af4c2728 | 5218 | flog_err( |
e50f7cfd | 5219 | EC_BGP_EVPN_ROUTE_CREATE, |
ead40654 | 5220 | "%u:Failed to create Type-2 route, VNI %u %s MAC %s IP %s (flags: 0x%x)", |
1a98c087 | 5221 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
5222 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
5223 | ? "sticky gateway" | |
5224 | : "", | |
d62a17ae | 5225 | prefix_mac2str(mac, buf, sizeof(buf)), |
996c9314 | 5226 | ipaddr2str(ip, buf2, sizeof(buf2)), flags); |
d62a17ae | 5227 | return -1; |
5228 | } | |
128ea8ab | 5229 | |
d62a17ae | 5230 | return 0; |
128ea8ab | 5231 | } |
5232 | ||
e3b78da8 | 5233 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
5234 | struct bgp *bgp_vrf) |
5235 | { | |
e3b78da8 | 5236 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 5237 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 5238 | |
5e53dce3 T |
5239 | bgp_evpn = bgp_get_evpn(); |
5240 | assert(bgp_evpn); | |
6a8657d0 | 5241 | |
6a8657d0 MK |
5242 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
5243 | bgpevpn_link_to_l3vni(vpn); | |
5244 | } | |
5245 | ||
14e814ea CS |
5246 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
5247 | struct ethaddr *svi_rmac, | |
5248 | struct ethaddr *vrr_rmac, | |
0483af6e | 5249 | struct in_addr originator_ip, int filter, |
14e814ea CS |
5250 | ifindex_t svi_ifindex, |
5251 | bool is_anycast_mac) | |
fe1dc5a3 MK |
5252 | { |
5253 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 5254 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
5255 | struct listnode *node = NULL; |
5256 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
5257 | as_t as = 0; |
5258 | ||
3621ebc5 | 5259 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 5260 | * auto-creatio |
5261 | */ | |
5e53dce3 T |
5262 | bgp_evpn = bgp_get_evpn(); |
5263 | if (!bgp_evpn) { | |
af4c2728 | 5264 | flog_err( |
e50f7cfd | 5265 | EC_BGP_NO_DFLT, |
3621ebc5 | 5266 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 5267 | l3vni); |
fe1dc5a3 MK |
5268 | return -1; |
5269 | } | |
5e53dce3 | 5270 | as = bgp_evpn->as; |
fe1dc5a3 | 5271 | |
0437e105 | 5272 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 5273 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
5274 | if (!bgp_vrf) { |
5275 | ||
5276 | int ret = 0; | |
5277 | ||
5d5393b9 DL |
5278 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
5279 | vrf_id == VRF_DEFAULT | |
5280 | ? BGP_INSTANCE_TYPE_DEFAULT | |
5281 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 5282 | switch (ret) { |
fe1dc5a3 | 5283 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 5284 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
1c50c1c0 | 5285 | "BGP is already running; AS is %u\n", as); |
fe1dc5a3 MK |
5286 | return -1; |
5287 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 5288 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
1c50c1c0 | 5289 | "BGP instance name and AS number mismatch\n"); |
fe1dc5a3 MK |
5290 | return -1; |
5291 | } | |
5292 | ||
5293 | /* mark as auto created */ | |
5294 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
5295 | } | |
5296 | ||
0483af6e | 5297 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 5298 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 5299 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 5300 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 5301 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 5302 | |
14e814ea CS |
5303 | /* copy anycast MAC from VRR MAC */ |
5304 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
5305 | /* copy sys RMAC from SVI MAC */ | |
5306 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
5307 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
5308 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
5309 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
5310 | ||
5311 | if (bgp_debug_zebra(NULL)) { | |
5312 | char buf[ETHER_ADDR_STRLEN]; | |
5313 | char buf1[ETHER_ADDR_STRLEN]; | |
5314 | char buf2[ETHER_ADDR_STRLEN]; | |
5315 | ||
5316 | zlog_debug("VRF %s vni %u pip %s RMAC %s sys RMAC %s static RMAC %s is_anycast_mac %s", | |
5317 | vrf_id_to_name(bgp_vrf->vrf_id), | |
5318 | bgp_vrf->l3vni, | |
5319 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
5320 | : "disable", | |
5321 | prefix_mac2str(&bgp_vrf->rmac, buf, sizeof(buf)), | |
5322 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac, | |
5323 | buf1, sizeof(buf1)), | |
5324 | prefix_mac2str(&bgp_vrf->evpn_info->pip_rmac_static, | |
5325 | buf2, sizeof(buf2)), | |
5326 | is_anycast_mac ? "Enable" : "Disable"); | |
5327 | } | |
c48d9f5f | 5328 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 5329 | if (filter) { |
c48d9f5f MK |
5330 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5331 | ||
10f70510 AD |
5332 | /* |
5333 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
5334 | * set before linking vrf to L3VNI. Thus, no need to clear | |
5335 | * that explicitly. | |
5336 | */ | |
5337 | } else { | |
5338 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
5339 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
5340 | ||
5341 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5342 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
5343 | ||
5344 | /* | |
5345 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
5346 | * flag, update all MACIP routes in this VNI | |
5347 | */ | |
5348 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5349 | update_all_type2_routes(bgp_evpn, vpn); | |
5350 | } | |
5351 | } | |
5352 | } | |
5353 | ||
530e8a6e | 5354 | /* Map auto derive or configured RTs */ |
c581d8b0 MK |
5355 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5356 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5357 | else |
5358 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5359 | ||
c581d8b0 MK |
5360 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5361 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
530e8a6e CS |
5362 | |
5363 | /* auto derive RD */ | |
676f83b9 | 5364 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 5365 | |
6a8657d0 | 5366 | /* link all corresponding l2vnis */ |
5e53dce3 | 5367 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 5368 | (void (*)(struct hash_bucket *, |
996c9314 | 5369 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
5370 | bgp_vrf); |
5371 | ||
c48d9f5f MK |
5372 | /* Only update all corresponding type-2 routes if we are advertising two |
5373 | * labels along with type-2 routes | |
5374 | */ | |
5375 | if (!filter) | |
5376 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 5377 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 5378 | |
06d2e8f3 MK |
5379 | /* advertise type-5 routes if needed */ |
5380 | update_advertise_vrf_routes(bgp_vrf); | |
5381 | ||
5ba238b7 MK |
5382 | /* install all remote routes belonging to this l3vni into correspondng |
5383 | * vrf */ | |
5384 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
5385 | |
5386 | return 0; | |
5387 | } | |
5388 | ||
996c9314 | 5389 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
5390 | { |
5391 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 5392 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 5393 | struct listnode *node = NULL; |
18abc1eb | 5394 | struct listnode *next = NULL; |
f1f8b53c | 5395 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
5396 | |
5397 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
5398 | if (!bgp_vrf) { | |
af4c2728 | 5399 | flog_err( |
e50f7cfd | 5400 | EC_BGP_NO_DFLT, |
996c9314 LB |
5401 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
5402 | l3vni); | |
fe1dc5a3 MK |
5403 | return -1; |
5404 | } | |
5405 | ||
5e53dce3 T |
5406 | bgp_evpn = bgp_get_evpn(); |
5407 | if (!bgp_evpn) { | |
af4c2728 | 5408 | flog_err( |
e50f7cfd | 5409 | EC_BGP_NO_DFLT, |
3621ebc5 | 5410 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 5411 | l3vni); |
f1f8b53c MK |
5412 | return -1; |
5413 | } | |
5414 | ||
d846168d | 5415 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 5416 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
5417 | * routes. This will uninstalling the routes from zebra and decremnt the |
5418 | * bgp info count. | |
523cafc4 | 5419 | */ |
d846168d | 5420 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 5421 | |
06d2e8f3 MK |
5422 | /* delete/withdraw all type-5 routes */ |
5423 | delete_withdraw_vrf_routes(bgp_vrf); | |
5424 | ||
fe1dc5a3 MK |
5425 | /* remove the l3vni from vrf instance */ |
5426 | bgp_vrf->l3vni = 0; | |
5427 | ||
5428 | /* remove the Rmac from the BGP vrf */ | |
5429 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
5430 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
5431 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
5432 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
5433 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 5434 | |
530e8a6e | 5435 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 5436 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 5437 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
5438 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5439 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 5440 | } |
530e8a6e CS |
5441 | |
5442 | /* remove default export RT */ | |
5443 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
5444 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 5445 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 5446 | } |
fe1dc5a3 | 5447 | |
f1f8b53c | 5448 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
5449 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
5450 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
5451 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 5452 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
5453 | } |
5454 | } | |
fe1dc5a3 | 5455 | |
18abc1eb | 5456 | /* If any L2VNIs point to this instance, unlink them. */ |
5457 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
5458 | bgpevpn_unlink_from_l3vni(vpn); | |
5459 | ||
ff9d54fb CS |
5460 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
5461 | ||
fe1dc5a3 MK |
5462 | /* Delete the instance if it was autocreated */ |
5463 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
5464 | bgp_delete(bgp_vrf); | |
5465 | ||
5466 | return 0; | |
5467 | } | |
5468 | ||
128ea8ab | 5469 | /* |
5470 | * Handle del of a local VNI. | |
5471 | */ | |
d62a17ae | 5472 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 5473 | { |
d62a17ae | 5474 | struct bgpevpn *vpn; |
128ea8ab | 5475 | |
d62a17ae | 5476 | /* Locate VNI hash */ |
5477 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
5478 | if (!vpn) { | |
1e00627b | 5479 | if (bgp_debug_zebra(NULL)) |
ade6974d | 5480 | flog_warn( |
e50f7cfd | 5481 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
5482 | "%u: VNI hash entry for VNI %u not found at DEL", |
5483 | bgp->vrf_id, vni); | |
d62a17ae | 5484 | return 0; |
5485 | } | |
128ea8ab | 5486 | |
d62a17ae | 5487 | /* Remove all local EVPN routes and schedule for processing (to |
5488 | * withdraw from peers). | |
5489 | */ | |
5490 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 5491 | |
db0e1937 MK |
5492 | /* |
5493 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
5494 | */ | |
5495 | bgp_tip_del(bgp, &vpn->originator_ip); | |
5496 | ||
d62a17ae | 5497 | /* Clear "live" flag and see if hash needs to be freed. */ |
5498 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5499 | if (!is_vni_configured(vpn)) | |
5500 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 5501 | |
d62a17ae | 5502 | return 0; |
128ea8ab | 5503 | } |
5504 | ||
5505 | /* | |
d1911c26 | 5506 | * Handle add (or update) of a local VNI. The VNI changes we care |
5507 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 5508 | */ |
d62a17ae | 5509 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5510 | struct in_addr originator_ip, |
5511 | vrf_id_t tenant_vrf_id, | |
5512 | struct in_addr mcast_grp) | |
5513 | ||
d62a17ae | 5514 | { |
5515 | struct bgpevpn *vpn; | |
5516 | struct prefix_evpn p; | |
5517 | ||
d62a17ae | 5518 | /* Lookup VNI. If present and no change, exit. */ |
5519 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 5520 | if (vpn) { |
29c53922 | 5521 | |
d1911c26 | 5522 | if (is_vni_live(vpn) |
5523 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 5524 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
d1911c26 | 5525 | && vpn->tenant_vrf_id == tenant_vrf_id) |
5526 | /* Probably some other param has changed that we don't | |
5527 | * care about. */ | |
5528 | return 0; | |
5529 | ||
76d07c7a AK |
5530 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
5531 | ||
d1911c26 | 5532 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 MK |
5533 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
5534 | bgpevpn_unlink_from_l3vni(vpn); | |
29c53922 | 5535 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 MK |
5536 | bgpevpn_link_to_l3vni(vpn); |
5537 | } | |
29c53922 | 5538 | |
d1911c26 | 5539 | /* If tunnel endpoint IP has changed, update (and delete prior |
5540 | * type-3 route, if needed.) | |
5541 | */ | |
5542 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
5543 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 5544 | |
d1911c26 | 5545 | /* Update all routes with new endpoint IP and/or export RT |
5546 | * for VRFs | |
5547 | */ | |
5548 | if (is_vni_live(vpn)) | |
5549 | update_routes_for_vni(bgp, vpn); | |
d62a17ae | 5550 | } |
5551 | ||
5552 | /* Create or update as appropriate. */ | |
5553 | if (!vpn) { | |
76d07c7a AK |
5554 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
5555 | mcast_grp); | |
d62a17ae | 5556 | if (!vpn) { |
af4c2728 | 5557 | flog_err( |
e50f7cfd | 5558 | EC_BGP_VNI, |
d62a17ae | 5559 | "%u: Failed to allocate VNI entry for VNI %u - at Add", |
5560 | bgp->vrf_id, vni); | |
5561 | return -1; | |
5562 | } | |
5563 | } | |
5564 | ||
db0e1937 | 5565 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
5566 | if (is_vni_live(vpn)) |
5567 | return 0; | |
5568 | ||
d62a17ae | 5569 | /* Mark as "live" */ |
5570 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
5571 | ||
db0e1937 MK |
5572 | /* tunnel is now active, add tunnel-ip to db */ |
5573 | bgp_tip_add(bgp, &originator_ip); | |
5574 | ||
5575 | /* filter routes as nexthop database has changed */ | |
5576 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
5577 | ||
fd069644 DS |
5578 | /* |
5579 | * Create EVPN type-3 route and schedule for processing. | |
5580 | * | |
5581 | * RT-3 only if doing head-end replication | |
5582 | */ | |
833b8a50 AK |
5583 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
5584 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 5585 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 5586 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
5587 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
5588 | "%u: Type3 route creation failure for VNI %u", | |
5589 | bgp->vrf_id, vni); | |
5590 | return -1; | |
5591 | } | |
d62a17ae | 5592 | } |
5593 | ||
5594 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
5595 | * VNI, | |
5596 | * install them. | |
5597 | */ | |
5598 | install_routes_for_vni(bgp, vpn); | |
5599 | ||
d7d97010 MK |
5600 | /* If we are advertising gateway mac-ip |
5601 | It needs to be conveyed again to zebra */ | |
5602 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
5603 | ||
df070e6f CS |
5604 | /* advertise svi mac-ip knob to zebra */ |
5605 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
5606 | ||
d62a17ae | 5607 | return 0; |
b18825eb | 5608 | } |
14c1a7bf | 5609 | |
fd069644 DS |
5610 | /* |
5611 | * Handle change in setting for BUM handling. The supported values | |
5612 | * are head-end replication and dropping all BUM packets. Any change | |
5613 | * should be registered with zebra. Also, if doing head-end replication, | |
5614 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
5615 | * to be dropped, the RT-3s must be withdrawn. | |
5616 | */ | |
5617 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
5618 | { | |
5619 | zlog_info("L2VPN EVPN BUM handling is %s", | |
5620 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
5621 | "Flooding" : "Flooding Disabled"); | |
5622 | ||
5623 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
5624 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
5625 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
5626 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
5627 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
5628 | } | |
5629 | ||
7724c0a1 | 5630 | /* |
5631 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
5632 | * EVPN routes from peers. | |
5633 | */ | |
d62a17ae | 5634 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 5635 | { |
e3b78da8 | 5636 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
5637 | void *))cleanup_vni_on_disable, |
5638 | bgp); | |
7724c0a1 | 5639 | } |
5640 | ||
14c1a7bf | 5641 | /* |
5642 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
5643 | * BGP instance (default) is being freed. | |
5644 | */ | |
d62a17ae | 5645 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 5646 | { |
1525e99f | 5647 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5648 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
5649 | bgp); |
5650 | ||
5651 | hash_free(bgp->import_rt_hash); | |
d62a17ae | 5652 | bgp->import_rt_hash = NULL; |
1525e99f DS |
5653 | |
5654 | hash_free(bgp->vrf_import_rt_hash); | |
10ebe1ab | 5655 | bgp->vrf_import_rt_hash = NULL; |
1525e99f DS |
5656 | |
5657 | hash_free(bgp->vnihash); | |
d62a17ae | 5658 | bgp->vnihash = NULL; |
1525e99f | 5659 | |
6a154c88 DL |
5660 | list_delete(&bgp->vrf_import_rtl); |
5661 | list_delete(&bgp->vrf_export_rtl); | |
5662 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 5663 | } |
5664 | ||
5665 | /* | |
5666 | * Initialization for EVPN | |
5667 | * Create | |
5668 | * VNI hash table | |
5669 | * hash for RT to VNI | |
14c1a7bf | 5670 | */ |
d62a17ae | 5671 | void bgp_evpn_init(struct bgp *bgp) |
5672 | { | |
5673 | bgp->vnihash = | |
5674 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
5675 | bgp->import_rt_hash = | |
5676 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
5677 | "BGP Import RT Hash"); | |
10ebe1ab MK |
5678 | bgp->vrf_import_rt_hash = |
5679 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
5680 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
5681 | bgp->vrf_import_rtl = list_new(); |
5682 | bgp->vrf_import_rtl->cmp = | |
5683 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5684 | bgp->vrf_import_rtl->del = evpn_xxport_delete_ecomm; |
c581d8b0 MK |
5685 | bgp->vrf_export_rtl = list_new(); |
5686 | bgp->vrf_export_rtl->cmp = | |
5687 | (int (*)(void *, void *))evpn_route_target_cmp; | |
987d8198 | 5688 | bgp->vrf_export_rtl->del = evpn_xxport_delete_ecomm; |
6a8657d0 | 5689 | bgp->l2vnis = list_new(); |
64465785 | 5690 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
5691 | /* By default Duplicate Address Dection is enabled. |
5692 | * Max-moves (N) 5, detection time (M) 180 | |
5693 | * default action is warning-only | |
5694 | * freeze action permanently freezes address, | |
5695 | * and freeze time (auto-recovery) is disabled. | |
5696 | */ | |
5697 | if (bgp->evpn_info) { | |
5698 | bgp->evpn_info->dup_addr_detect = true; | |
5699 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
5700 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
5701 | bgp->evpn_info->dad_freeze = false; | |
5702 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
5703 | /* Initialize zebra vxlan */ |
5704 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
5705 | /* Enable PIP feature by default for bgp vrf instance */ |
5706 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
5707 | struct bgp *bgp_default; | |
5708 | ||
5709 | bgp->evpn_info->advertise_pip = true; | |
5710 | bgp_default = bgp_get_default(); | |
5711 | if (bgp_default) | |
5712 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
5713 | } | |
85c8d83b | 5714 | } |
fd069644 DS |
5715 | |
5716 | /* Default BUM handling is to do head-end replication. */ | |
5717 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
14c1a7bf | 5718 | } |
10ebe1ab MK |
5719 | |
5720 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
5721 | { | |
5722 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
5723 | } | |
44c69747 LK |
5724 | |
5725 | /* | |
5726 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
5727 | */ | |
5f040085 | 5728 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
5729 | { |
5730 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5731 | ||
5732 | if (!pfx || pfx->family != AF_EVPN) | |
5733 | return 0; | |
5734 | ||
5735 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
5736 | return 0; | |
5737 | ||
5738 | return evp->prefix.prefix_addr.ip_prefix_length; | |
5739 | } | |
7c312383 AD |
5740 | |
5741 | /* | |
5742 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
5743 | */ | |
5a1ae2c2 | 5744 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
5745 | { |
5746 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
5747 | ||
5748 | /* | |
e11329ca | 5749 | * EVPN routes should be marked as valid only if the nexthop is |
5750 | * reachable. Only if this happens, the route should be imported | |
5751 | * (into VNI or VRF routing tables) and/or advertised. | |
5752 | * Note: This is currently applied for EVPN type-2, type-3 and | |
5753 | * type-5 routes. It may be tweaked later on for other routes, or | |
5754 | * even removed completely when all routes are handled. | |
7c312383 AD |
5755 | */ |
5756 | if (pfx && pfx->family == AF_EVPN && | |
e11329ca | 5757 | (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
5758 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
5759 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
5760 | return true; |
5761 | ||
5762 | return false; | |
5763 | } |